code: def read_depth_to_ram(self):
      assert self._depth is None
      self._depth = self.depth_map
      return self._depth.nbytes
  
imports: import os
  import abc
  import numpy
  import imageio
  import PIL
  from PIL import Image
label_desc: Use image node_id 5 for calling the CapturedDepth obj's underlying member method code with example usage: obj.read_depth_to_ram() and returns: self