code: def rename_Concat(self, source_node):
      IR_node = self._convert_identity_operation(
          source_node, new_op="Concat"
      )
  
      # dim
      if (
          self.data_format in MXNetParser.channels_first
          or self.data_format == "None"
      ):
          IR_node.attr["axis"].i = MXNetParser._convert_axis(
              IR_node, int(source_node.get_attr("dim", "1"))
          )
      else:
          IR_node.attr["axis"].i = int(source_node.get_attr("dim", "1"))
  
imports: import os
  import sys
  import math
  import mxnet
  import numpy
  from mmdnn.conversion.mxnet.mxnet_graph import MXNetGraph
  import mmdnn.conversion.common.IR.graph_pb2
  from mmdnn.conversion.common.IR.graph_pb2 import NodeDef, GraphDef, DataType
  from mmdnn.conversion.common.DataStructure.parser import Parser
  from mmdnn.conversion.common.utils import *
label_desc: Use image node_id 35 for calling the MXNetParser obj's underlying member method code with example usage: obj.rename_Concat(source_node) without return types