docstr: How many results are ready to be returned.
docstr_tok: ["How","many","results","are","ready","to","be","returned","."]
code: def __call__(self, task):
      """
      How many results are ready to be returned.
      """
      self.put(task)
      return self.get()
  
imports: import atexit
  import numpy
  import queue
  import torch
  import torch.multiprocessing
  import slowfast.utils.logging
  from slowfast.datasets import cv2_transform
  from slowfast.visualization.predictor import Predictor
label_desc: Use image node_id 4 for calling the AsyncVis obj's underlying member method code with example usage: obj.__call__(task) and returns: self