diff --git a/google-api-go-generator/gen.go b/google-api-go-generator/gen.go
index fa00f7a20ec..cb9ff8a1888 100644
--- a/google-api-go-generator/gen.go
+++ b/google-api-go-generator/gen.go
@@ -587,6 +587,71 @@ func (a *API) WriteGeneratedCode() error {
 	return nil
 }
 
+func (a *API) printPkgDocs() {
+	pkg := a.Package()
+	pn := a.pn
+
+	pn("// Package %s provides access to the %s.", pkg, a.doc.Title)
+	if r := replacementPackage.Get(pkg, a.Version); r != "" {
+		pn("//")
+		pn("// This package is DEPRECATED. Use package %s instead.", r)
+	}
+	docsLink = a.doc.DocumentationLink
+	if docsLink != "" {
+		pn("//")
+		pn("// For product documentation, see: %s", docsLink)
+	}
+	pn("//")
+	pn("// # Library status")
+	pn("//")
+	pn("// These client libraries are officially supported by Google. However, this")
+	pn("// library is considered complete and is in maintenance mode. This means")
+	pn("// that we will address critical bugs and security issues but will not add")
+	pn("// any new features.")
+	pn("// ")
+	pn("// When possible, we recommend using our newer")
+	pn("// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)")
+	pn("// that are still actively being worked and iterated on.")
+	pn("//")
+	pn("// # Creating a client")
+	pn("//")
+	pn("// Usage example:")
+	pn("//")
+	pn("//   import %q", a.Target())
+	pn("//   ...")
+	pn("//   ctx := context.Background()")
+	pn("//   %sService, err := %s.NewService(ctx)", pkg, pkg)
+	pn("//")
+	pn("// In this example, Google Application Default Credentials are used for")
+	pn("// authentication. For information on how to create and obtain Application")
+	pn("// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.")
+	pn("//")
+	pn("// # Other authentication options")
+	pn("//")
+	if len(a.doc.Auth.OAuth2Scopes) > 1 {
+		pn(`// By default, all available scopes (see "Constants") are used to authenticate.`)
+		pn(`// To restrict scopes, use [google.golang.org/api/option.WithScopes]:`)
+		pn("//")
+		// NOTE: the first scope tends to be the broadest. Use the last one to demonstrate restriction.
+		pn("//   %sService, err := %s.NewService(ctx, option.WithScopes(%s.%s))", pkg, pkg, pkg, scopeIdentifier(a.doc.Auth.OAuth2Scopes[len(a.doc.Auth.OAuth2Scopes)-1]))
+		pn("//")
+	}
+	pn("// To use an API key for authentication (note: some APIs do not support API")
+	pn("// keys), use [google.golang.org/api/option.WithAPIKey]:")
+	pn("//")
+	pn(`//   %sService, err := %s.NewService(ctx, option.WithAPIKey("AIza..."))`, pkg, pkg)
+	pn("//")
+	pn("// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth")
+	pn("// flow, use [google.golang.org/api/option.WithTokenSource]:")
+	pn("//")
+	pn("//   config := &oauth2.Config{...}")
+	pn("//   // ...")
+	pn("//   token, err := config.Exchange(ctx, ...)")
+	pn("//   %sService, err := %s.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))", pkg, pkg)
+	pn("//")
+	pn("// See [google.golang.org/api/option.ClientOption] for details on options.")
+}
+
 var docsLink string
 
 func (a *API) GenerateCode() ([]byte, error) {
@@ -638,51 +703,7 @@ func (a *API) GenerateCode() ([]byte, error) {
 // Code generated file. DO NOT EDIT.
 `, *copyrightYear)
 
-	pn("// Package %s provides access to the %s.", pkg, a.doc.Title)
-	if r := replacementPackage.Get(pkg, a.Version); r != "" {
-		pn("//")
-		pn("// This package is DEPRECATED. Use package %s instead.", r)
-	}
-	docsLink = a.doc.DocumentationLink
-	if docsLink != "" {
-		pn("//")
-		pn("// For product documentation, see: %s", docsLink)
-	}
-	pn("//")
-	pn("// Creating a client")
-	pn("//")
-	pn("// Usage example:")
-	pn("//")
-	pn("//   import %q", a.Target())
-	pn("//   ...")
-	pn("//   ctx := context.Background()")
-	pn("//   %sService, err := %s.NewService(ctx)", pkg, pkg)
-	pn("//")
-	pn("// In this example, Google Application Default Credentials are used for authentication.")
-	pn("//")
-	pn("// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.")
-	pn("//")
-	pn("// Other authentication options")
-	pn("//")
-	if len(a.doc.Auth.OAuth2Scopes) > 1 {
-		pn(`// By default, all available scopes (see "Constants") are used to authenticate. To restrict scopes, use option.WithScopes:`)
-		pn("//")
-		// NOTE: the first scope tends to be the broadest. Use the last one to demonstrate restriction.
-		pn("//   %sService, err := %s.NewService(ctx, option.WithScopes(%s.%s))", pkg, pkg, pkg, scopeIdentifier(a.doc.Auth.OAuth2Scopes[len(a.doc.Auth.OAuth2Scopes)-1]))
-		pn("//")
-	}
-	pn("// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:")
-	pn("//")
-	pn(`//   %sService, err := %s.NewService(ctx, option.WithAPIKey("AIza..."))`, pkg, pkg)
-	pn("//")
-	pn("// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:")
-	pn("//")
-	pn("//   config := &oauth2.Config{...}")
-	pn("//   // ...")
-	pn("//   token, err := config.Exchange(ctx, ...)")
-	pn("//   %sService, err := %s.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))", pkg, pkg)
-	pn("//")
-	pn("// See https://godoc.org/google.golang.org/api/option/ for details on options.")
+	a.printPkgDocs()
 	pn("package %s // import %q", pkg, a.Target())
 	p("\n")
 	pn("import (")
diff --git a/google-api-go-generator/testdata/any.want b/google-api-go-generator/testdata/any.want
index cddbd6d97d2..539bfe3bd0c 100644
--- a/google-api-go-generator/testdata/any.want
+++ b/google-api-go-generator/testdata/any.want
@@ -8,6 +8,17 @@
 //
 // This package is DEPRECATED. Use package cloud.google.com/go/logging instead.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -17,24 +28,26 @@
 //	ctx := context.Background()
 //	loggingService, err := logging.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	loggingService, err := logging.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	loggingService, err := logging.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package logging // import "google.golang.org/api/logging/v1beta3"
 
 import (
diff --git a/google-api-go-generator/testdata/arrayofarray-1.want b/google-api-go-generator/testdata/arrayofarray-1.want
index 150181e1348..f652d15f066 100644
--- a/google-api-go-generator/testdata/arrayofarray-1.want
+++ b/google-api-go-generator/testdata/arrayofarray-1.want
@@ -6,6 +6,17 @@
 
 // Package arrayofarray provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	arrayofarrayService, err := arrayofarray.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	arrayofarrayService, err := arrayofarray.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	arrayofarrayService, err := arrayofarray.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package arrayofarray // import "google.golang.org/api/arrayofarray/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/arrayofenum.want b/google-api-go-generator/testdata/arrayofenum.want
index a0d421e7139..da15dbe0dc6 100644
--- a/google-api-go-generator/testdata/arrayofenum.want
+++ b/google-api-go-generator/testdata/arrayofenum.want
@@ -6,6 +6,17 @@
 
 // Package arrayofenum provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	arrayofenumService, err := arrayofenum.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	arrayofenumService, err := arrayofenum.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	arrayofenumService, err := arrayofenum.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package arrayofenum // import "google.golang.org/api/arrayofenum/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/arrayofmapofobjects.want b/google-api-go-generator/testdata/arrayofmapofobjects.want
index 62cb65c9751..cb6d657a8ad 100644
--- a/google-api-go-generator/testdata/arrayofmapofobjects.want
+++ b/google-api-go-generator/testdata/arrayofmapofobjects.want
@@ -6,6 +6,17 @@
 
 // Package arrayofmapofstrings provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	arrayofmapofstringsService, err := arrayofmapofstrings.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	arrayofmapofstringsService, err := arrayofmapofstrings.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	arrayofmapofstringsService, err := arrayofmapofstrings.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package arrayofmapofstrings // import "google.golang.org/api/arrayofmapofstrings/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/arrayofmapofstrings.want b/google-api-go-generator/testdata/arrayofmapofstrings.want
index cfbeaa576bb..2a7ee2229fd 100644
--- a/google-api-go-generator/testdata/arrayofmapofstrings.want
+++ b/google-api-go-generator/testdata/arrayofmapofstrings.want
@@ -6,6 +6,17 @@
 
 // Package arrayofmapofstrings provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	arrayofmapofstringsService, err := arrayofmapofstrings.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	arrayofmapofstringsService, err := arrayofmapofstrings.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	arrayofmapofstringsService, err := arrayofmapofstrings.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package arrayofmapofstrings // import "google.golang.org/api/arrayofmapofstrings/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/blogger-3.want b/google-api-go-generator/testdata/blogger-3.want
index 7512410b303..97b4e5fbf6b 100644
--- a/google-api-go-generator/testdata/blogger-3.want
+++ b/google-api-go-generator/testdata/blogger-3.want
@@ -8,6 +8,17 @@
 //
 // For product documentation, see: https://developers.google.com/blogger/docs/3.0/getting_started
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -17,28 +28,31 @@
 //	ctx := context.Background()
 //	bloggerService, err := blogger.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// By default, all available scopes (see "Constants") are used to authenticate. To restrict scopes, use option.WithScopes:
+// By default, all available scopes (see "Constants") are used to authenticate.
+// To restrict scopes, use [google.golang.org/api/option.WithScopes]:
 //
 //	bloggerService, err := blogger.NewService(ctx, option.WithScopes(blogger.BloggerReadonlyScope))
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	bloggerService, err := blogger.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	bloggerService, err := blogger.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package blogger // import "google.golang.org/api/blogger/v3"
 
 import (
diff --git a/google-api-go-generator/testdata/floats.want b/google-api-go-generator/testdata/floats.want
index d523ba3976d..1419138e2e0 100644
--- a/google-api-go-generator/testdata/floats.want
+++ b/google-api-go-generator/testdata/floats.want
@@ -8,6 +8,17 @@
 //
 // For product documentation, see: https://cloud.google.com/appengine/docs/admin-api/
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -17,24 +28,26 @@
 //	ctx := context.Background()
 //	xService, err := x.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	xService, err := x.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	xService, err := x.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package x // import "google.golang.org/api/x/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/getwithoutbody.want b/google-api-go-generator/testdata/getwithoutbody.want
index 87b7a4a083c..a0989068d9c 100644
--- a/google-api-go-generator/testdata/getwithoutbody.want
+++ b/google-api-go-generator/testdata/getwithoutbody.want
@@ -6,6 +6,17 @@
 
 // Package getwithoutbody provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	getwithoutbodyService, err := getwithoutbody.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	getwithoutbodyService, err := getwithoutbody.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	getwithoutbodyService, err := getwithoutbody.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package getwithoutbody // import "google.golang.org/api/getwithoutbody/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/http-body.want b/google-api-go-generator/testdata/http-body.want
index e08de778d1c..9cc8acdb6d9 100644
--- a/google-api-go-generator/testdata/http-body.want
+++ b/google-api-go-generator/testdata/http-body.want
@@ -8,6 +8,17 @@
 //
 // For product documentation, see: https://cloud.google.com/healthcare
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -17,24 +28,26 @@
 //	ctx := context.Background()
 //	healthcareService, err := healthcare.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	healthcareService, err := healthcare.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	healthcareService, err := healthcare.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package healthcare // import "google.golang.org/api/healthcare/v1beta1"
 
 import (
diff --git a/google-api-go-generator/testdata/json-body.want b/google-api-go-generator/testdata/json-body.want
index 0f03745281d..6a32a45d1bb 100644
--- a/google-api-go-generator/testdata/json-body.want
+++ b/google-api-go-generator/testdata/json-body.want
@@ -8,6 +8,17 @@
 //
 // For product documentation, see: https://cloud.google.com/ml/
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -17,24 +28,26 @@
 //	ctx := context.Background()
 //	mlService, err := ml.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	mlService, err := ml.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	mlService, err := ml.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package ml // import "google.golang.org/api/ml/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/mapofany.want b/google-api-go-generator/testdata/mapofany.want
index 4f1ef850e49..bbe228a9398 100644
--- a/google-api-go-generator/testdata/mapofany.want
+++ b/google-api-go-generator/testdata/mapofany.want
@@ -6,6 +6,17 @@
 
 // Package mapofany provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	mapofanyService, err := mapofany.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	mapofanyService, err := mapofany.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	mapofanyService, err := mapofany.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package mapofany // import "google.golang.org/api/mapofany/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/mapofarrayofobjects.want b/google-api-go-generator/testdata/mapofarrayofobjects.want
index dc02214d6d8..53a7cb541d7 100644
--- a/google-api-go-generator/testdata/mapofarrayofobjects.want
+++ b/google-api-go-generator/testdata/mapofarrayofobjects.want
@@ -6,6 +6,17 @@
 
 // Package additionalprops provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	additionalpropsService, err := additionalprops.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	additionalpropsService, err := additionalprops.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	additionalpropsService, err := additionalprops.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package additionalprops // import "google.golang.org/api/additionalprops/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/mapofint64strings.want b/google-api-go-generator/testdata/mapofint64strings.want
index fcfbb559dbc..3c307bee005 100644
--- a/google-api-go-generator/testdata/mapofint64strings.want
+++ b/google-api-go-generator/testdata/mapofint64strings.want
@@ -6,6 +6,17 @@
 
 // Package androidbuildinternal provides access to the .
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	androidbuildinternalService, err := androidbuildinternal.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	androidbuildinternalService, err := androidbuildinternal.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	androidbuildinternalService, err := androidbuildinternal.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package androidbuildinternal // import "google.golang.org/api/androidbuildinternal/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/mapofobjects.want b/google-api-go-generator/testdata/mapofobjects.want
index aa500eeff61..fcbc5d721e4 100644
--- a/google-api-go-generator/testdata/mapofobjects.want
+++ b/google-api-go-generator/testdata/mapofobjects.want
@@ -6,6 +6,17 @@
 
 // Package additionalpropsobjs provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	additionalpropsobjsService, err := additionalpropsobjs.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	additionalpropsobjsService, err := additionalpropsobjs.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	additionalpropsobjsService, err := additionalpropsobjs.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package additionalpropsobjs // import "google.golang.org/api/additionalpropsobjs/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/mapofstrings-1.want b/google-api-go-generator/testdata/mapofstrings-1.want
index 1ffcd905927..e61e2c86e63 100644
--- a/google-api-go-generator/testdata/mapofstrings-1.want
+++ b/google-api-go-generator/testdata/mapofstrings-1.want
@@ -6,6 +6,17 @@
 
 // Package additionalprops provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	additionalpropsService, err := additionalprops.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	additionalpropsService, err := additionalprops.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	additionalpropsService, err := additionalprops.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package additionalprops // import "google.golang.org/api/additionalprops/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/param-rename.want b/google-api-go-generator/testdata/param-rename.want
index c536bd18301..c84dbdfd87d 100644
--- a/google-api-go-generator/testdata/param-rename.want
+++ b/google-api-go-generator/testdata/param-rename.want
@@ -6,6 +6,17 @@
 
 // Package paramrename provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	paramrenameService, err := paramrename.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	paramrenameService, err := paramrename.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	paramrenameService, err := paramrename.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package paramrename // import "google.golang.org/api/paramrename/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/quotednum.want b/google-api-go-generator/testdata/quotednum.want
index bd4af8ba298..b5023c22002 100644
--- a/google-api-go-generator/testdata/quotednum.want
+++ b/google-api-go-generator/testdata/quotednum.want
@@ -8,6 +8,17 @@
 //
 // For product documentation, see: https://developers.google.com/ad-exchange/buyer-rest
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -17,24 +28,26 @@
 //	ctx := context.Background()
 //	adexchangebuyerService, err := adexchangebuyer.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	adexchangebuyerService, err := adexchangebuyer.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	adexchangebuyerService, err := adexchangebuyer.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package adexchangebuyer // import "google.golang.org/api/adexchangebuyer/v1.1"
 
 import (
diff --git a/google-api-go-generator/testdata/repeated.want b/google-api-go-generator/testdata/repeated.want
index 34647c3c678..4a3390aea7c 100644
--- a/google-api-go-generator/testdata/repeated.want
+++ b/google-api-go-generator/testdata/repeated.want
@@ -6,6 +6,17 @@
 
 // Package repeated provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	repeatedService, err := repeated.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	repeatedService, err := repeated.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	repeatedService, err := repeated.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package repeated // import "google.golang.org/api/repeated/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/required-query.want b/google-api-go-generator/testdata/required-query.want
index 3482d1cb2bd..4911cc30971 100644
--- a/google-api-go-generator/testdata/required-query.want
+++ b/google-api-go-generator/testdata/required-query.want
@@ -6,6 +6,17 @@
 
 // Package tshealth provides access to the .
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	tshealthService, err := tshealth.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	tshealthService, err := tshealth.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	tshealthService, err := tshealth.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package tshealth // import "google.golang.org/api/tshealth/"
 
 import (
diff --git a/google-api-go-generator/testdata/resource-named-service.want b/google-api-go-generator/testdata/resource-named-service.want
index 15ebad40bb9..1ee19742ac1 100644
--- a/google-api-go-generator/testdata/resource-named-service.want
+++ b/google-api-go-generator/testdata/resource-named-service.want
@@ -8,6 +8,17 @@
 //
 // For product documentation, see: https://cloud.google.com/appengine/docs/admin-api/
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -17,24 +28,26 @@
 //	ctx := context.Background()
 //	appengineService, err := appengine.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	appengineService, err := appengine.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	appengineService, err := appengine.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package appengine // import "google.golang.org/api/appengine/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/unfortunatedefaults.want b/google-api-go-generator/testdata/unfortunatedefaults.want
index 9aa3cbd5822..907d5e9a754 100644
--- a/google-api-go-generator/testdata/unfortunatedefaults.want
+++ b/google-api-go-generator/testdata/unfortunatedefaults.want
@@ -6,6 +6,17 @@
 
 // Package wrapnewlines provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	wrapnewlinesService, err := wrapnewlines.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	wrapnewlinesService, err := wrapnewlines.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	wrapnewlinesService, err := wrapnewlines.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package wrapnewlines // import "google.golang.org/api/wrapnewlines/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/variants.want b/google-api-go-generator/testdata/variants.want
index 4d4e0a1e630..16ba4ce1af1 100644
--- a/google-api-go-generator/testdata/variants.want
+++ b/google-api-go-generator/testdata/variants.want
@@ -6,6 +6,17 @@
 
 // Package additionalpropsobjs provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	additionalpropsobjsService, err := additionalpropsobjs.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	additionalpropsobjsService, err := additionalpropsobjs.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	additionalpropsobjsService, err := additionalpropsobjs.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package additionalpropsobjs // import "google.golang.org/api/additionalpropsobjs/v1"
 
 import (
diff --git a/google-api-go-generator/testdata/wrapnewlines.want b/google-api-go-generator/testdata/wrapnewlines.want
index 70285bf8657..41c50898954 100644
--- a/google-api-go-generator/testdata/wrapnewlines.want
+++ b/google-api-go-generator/testdata/wrapnewlines.want
@@ -6,6 +6,17 @@
 
 // Package wrapnewlines provides access to the Example API.
 //
+// # Library status
+//
+// These client libraries are officially supported by Google. However, this
+// library is considered complete and is in maintenance mode. This means
+// that we will address critical bugs and security issues but will not add
+// any new features.
+//
+// When possible, we recommend using our newer
+// [Cloud Client Libraries for Go](https://pkg.go.dev/cloud.google.com/go)
+// that are still actively being worked and iterated on.
+//
 // # Creating a client
 //
 // Usage example:
@@ -15,24 +26,26 @@
 //	ctx := context.Background()
 //	wrapnewlinesService, err := wrapnewlines.NewService(ctx)
 //
-// In this example, Google Application Default Credentials are used for authentication.
-//
-// For information on how to create and obtain Application Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
+// In this example, Google Application Default Credentials are used for
+// authentication. For information on how to create and obtain Application
+// Default Credentials, see https://developers.google.com/identity/protocols/application-default-credentials.
 //
 // # Other authentication options
 //
-// To use an API key for authentication (note: some APIs do not support API keys), use option.WithAPIKey:
+// To use an API key for authentication (note: some APIs do not support API
+// keys), use [google.golang.org/api/option.WithAPIKey]:
 //
 //	wrapnewlinesService, err := wrapnewlines.NewService(ctx, option.WithAPIKey("AIza..."))
 //
-// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth flow), use option.WithTokenSource:
+// To use an OAuth token (e.g., a user token obtained via a three-legged OAuth
+// flow, use [google.golang.org/api/option.WithTokenSource]:
 //
 //	config := &oauth2.Config{...}
 //	// ...
 //	token, err := config.Exchange(ctx, ...)
 //	wrapnewlinesService, err := wrapnewlines.NewService(ctx, option.WithTokenSource(config.TokenSource(ctx, token)))
 //
-// See https://godoc.org/google.golang.org/api/option/ for details on options.
+// See [google.golang.org/api/option.ClientOption] for details on options.
 package wrapnewlines // import "google.golang.org/api/wrapnewlines/v1"
 
 import (