code: def rename_Plus(self, source_node):
      if not source_node.covered:
          assert not source_node.layer.parameters
          IR_node = self._convert_identity_operation(
              source_node, new_op="Add"
          )
  
imports: import os
  import numpy
  from six.moves import xrange
  import cntk
  from mmdnn.conversion.cntk.cntk_graph import CntkGraph
  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
label_desc: Use image node_id 15 for calling the CntkParser obj's underlying member method code with example usage: obj.rename_Plus(source_node) without return types