code: def _process(self, ob):
      fracmissing = 1 - self.ac_count / self.timeout
      if self.dict_mode:
          ob["value_estimation_timeout"] = fracmissing
      else:
          return {
              "original": ob,
              "value_estimation_timeout": fracmissing,
          }
  
imports: from collections import deque
  import cv2
  from .atari_wrappers import WarpFrame, ClipRewardEnv, FrameStack, ScaledFloatFrame
  from .wrappers import TimeLimit
  import numpy
  import gym
label_desc: Use image node_id 4 for calling the AppendTimeout obj's underlying member method code with example usage: obj._process(ob) and returns: dict