code: def define_graph(self):
      im = self.load()
      im2 = self.load()
      return im, self.flip(im2)
  
imports: import numpy
  import nvidia.dali.ops
  import nvidia.dali.types
  import os
  import random
  from functools import partial
  from nvidia.dali.pipeline import Pipeline
  from nvidia.dali import fn, pipeline_def
  from nvidia.dali.python_function_plugin import current_dali_stream
label_desc: Use image node_id 2 for calling the LoadingPipeline obj's underlying member method code with example usage: obj.define_graph() and returns: im,  self