code: def _async_invoke(self, fn, scheduler):
      # type: (Callable, Any) -> None
      self.normal_queue.append(fn)
      self.queue_tick(scheduler)
  
imports: from collections import deque
  from threading import local
label_desc: Use image node_id 6 for calling the Async obj's underlying member method code with example usage: obj._async_invoke(fn, scheduler) without return types