code: def read_image_to_ram(self):
      assert self._image is None
      _image = self.image
      self._image = _image
      return self._image.nbytes
  
imports: import os
  import abc
  import numpy
  import imageio
  import PIL
  from PIL import Image
label_desc: Use image node_id 3 for calling the CapturedImage obj's underlying member method code with example usage: obj.read_image_to_ram() and returns: self