An interface that defines how to map each variant of [Callbacks] to a value of type [T]..
public interface Visitor<out T>An interface that defines how to map each variant of [Callbacks] to a value of type [T].
Maps an unknown variant of [Callbacks] to a value of type [T].
Returns a mutable builder for constructing an instance of [Configurable]..
Returns an immutable instance of [Configurable].
Returns a mutable builder for constructing an instance of [Configurable]..
Returns an immutable instance of [Configurable].