In a plugin of mine, I'd like to have the same

maven

DSL of the publication task, so in my extension I simply wrote

val maven = objects.newInstance<MavenArtifactRepository>()
fun maven(action: Action<in MavenArtifactRepository>) = action.execute(maven)

but I get: > Could not create an instance of type Library. > > Could not create an instance of type Library$Into. > > Could not create an instance of type org.gradle.api.artifacts.repositories.MavenArtifactRepository. > > Could not generate a decorated class for type MavenArtifactRepository. > > Cannot have abstract method AuthenticationSupported.getAuthentication(): AuthenticationContainer. Is there a way to achieve that?

Probably only by using internal class, or yourself developing a subclass that implements the methods Gradle cannot decorate into

Pity, thanks though