class Async::Task

def finish!
	# Don't hold references to the fiber or block after the task has finished:
	@fiber = nil
	@block = nil # If some how we went directly from initialized to finished.
	
	# Attempt to remove this node from the task tree.
	consume
	
	# If this task was being used as a future, signal completion here:
	if @finished
		@finished.signal(self)
		@finished = nil
	end
end