code: def _convert_identity_operation(
      self, source_node, in_edge_count=None, new_op=None
  ):
      IR_node = self.IR_graph.node.add()
      PytorchParser._copy_and_reop(source_node, IR_node, new_op)
      self.convert_inedge(source_node, IR_node, 0, in_edge_count)
      self._set_output_shape(source_node, IR_node)
      return IR_node
  
imports: import os
  import numpy
  import mmdnn.conversion.common.IR.graph_pb2
  from mmdnn.conversion.common.IR.graph_pb2 import NodeDef, GraphDef, DataType
  from mmdnn.conversion.common.utils import *
  from mmdnn.conversion.common.DataStructure.parser import Parser
  from mmdnn.conversion.pytorch.pytorch_graph import PytorchGraph040
  from mmdnn.conversion.pytorch.pytorch_graph import PytorchGraph151
  import torch
  import torchvision
label_desc: Use image node_id 28 for calling the PytorchParser obj's underlying member method code with example usage: obj._convert_identity_operation(source_node, in_edge_count, new_op) and returns: IR_node