Requests an element on the given port unless the port is already closed. Calling this method twice before an element arrived will fail. There can only be one outstanding request at any given time.The method HasBeenPulled(Inlet) can be used query whether pull is allowed to be called or not.

protected void TryPull<T>(
	Inlet<T> inlet
)

member TryPull : 
        inlet : Inlet<'T> -> unit