Kotlin DSL accessors generation could recover generics form type erasure in some cases

[eskatos]

The Kotlin DSL project schema accessibility provider maps any type with generics to Any because of type erasure. However it should be possible to recover the generic type information in some cases like for SAM of lambda classes.

Expected Behavior

// in `some` plugin
project.extensions.add("some", { name: String -> name.capitalize() })

// build.gradle.kts
plugins { `some` }
require(some("foo") == "Foo")

Current Behavior

// in `some` plugin
project.extensions.add("some", { name: String -> name.capitalize() })

// build.gradle.kts
plugins { `some` }
// casting is required because `some` is typed `Any` because of type erasure
val casted = some as (String) -> String
require(casted("foo") == "Foo")

Context

#10729

[stale]

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[stale]

This issue has been automatically closed due to inactivity. If you can reproduce this on a recent version of Gradle or if you have a good use case for this feature, please feel free to reopen the issue with steps to reproduce, a quick explanation of your use case or a high-quality pull request.