One-shot timer.
	
	
		A one-shot timer managed by the scene tree, which emits [signal timeout] on completion. See also [method SceneTree.create_timer].
		As opposed to [Timer], it does not require the instantiation of a node. Commonly used to create a one-shot delay timer as in the following example:
		[codeblock]
		func some_function():
			print("start")
			yield(get_tree().create_timer(1.0), "timeout")
			print("end")
		[/codeblock]
	
	
	
	
	
	
		
			The time remaining.
		
	
	
		
			
				Emitted when the timer reaches 0.