trait STM[F[_]] extends STMLike[F] with TDeferredLike[F] with TMVarLike[F] with TQueueLike[F] with TSemaphoreLike[F]
trait TSemaphoreLike[F]
trait TQueueLike[F]
trait TMVarLike[F]
trait TDeferredLike[F]
trait STMLike[F]
class Object
trait Matchable
class Any