Remove experimental comment from client interceptors

interceptor.go

@@ -25,25 +25,31 @@ import (
 // UnaryInvoker is called by UnaryClientInterceptor to complete RPCs.
 type UnaryInvoker func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, opts ...CallOption) error
 
-// UnaryClientInterceptor intercepts the execution of a unary RPC on the client. invoker is the handler to complete the RPC
-// and it is the responsibility of the interceptor to call it.
+// UnaryClientInterceptor intercepts the execution of a unary RPC on the client. The interceptors can be set on the
+// client connection using WithUnaryInterceptor or WithChainUnaryInterceptor. If client connections has the interceptor set,
+// then it delegates all unary RPC invocations to the interceptor, and it is the responsibility of the interceptor to call
+// invoke.
 //
-// Experimental
+// method is RPC name. req and reply are corresponding request and response RPC messages. cc is the client connection
+// the RPC is invoked on. invoker is the handler to complete the RPC and it is the responsibility of the interceptor to call it.
+// opts contain all applicable call options, including defaults from client connection as well as per-call options.
 //
-// Notice: This type is EXPERIMENTAL and may be changed or removed in a
-// later release.
+// The returned error must be compatible with the status package.
 type UnaryClientInterceptor func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error
 
 // Streamer is called by StreamClientInterceptor to create a ClientStream.
 type Streamer func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (ClientStream, error)
 
-// StreamClientInterceptor intercepts the creation of ClientStream. It may return a custom ClientStream to intercept all I/O
-// operations. streamer is the handler to create a ClientStream and it is the responsibility of the interceptor to call it.
+// StreamClientInterceptor intercepts the creation of ClientStream. The interceptors can be set on the client connection
+// using WithStreamInterceptor or WithChainStreamInterceptor. If client connection has the interceptor set, then it delegates
+// all stream creations to the interceptor, and it is the responsibility of the interceptor to call streamer.
 //
-// Experimental
+// desc contains stream description. cc is the client connection the RPC is invoked on. streamer is the handler to create
+// a ClientStream and it is the responsibility of the interceptor to call it. opts contain all applicable call options,
+// including defaults from client connection as well as per-call options.
 //
-// Notice: This type is EXPERIMENTAL and may be changed or removed in a
-// later release.
+// StreamClientInterceptor may return a custom ClientStream to intercept all I/O operations.
+// The returned error must be compatible with the status package.
 type StreamClientInterceptor func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, streamer Streamer, opts ...CallOption) (ClientStream, error)
 
 // UnaryServerInfo consists of various information about a unary RPC on