Enqueue's functionality needed in WPF Test automation project

I was used these methods EnqueueConditional, EnqueueCallback, EnqueueDelay in my earlier silverlight test automation project using Silverlight Toolkit long back. How can I get the similar behavior of the methods in WPF Test automation project? Is there Microsoft WPF toolkit or any other toolkit which comes supportability for WPF application with the same behavior or functionality of Enqueue's of Silverlight.