code: def rename_UNKNOWN(self, source_node):
      if source_node.type in self.skip_type:
          return
      print(
          "ONNX has not supported operator [%s] with name [%s]."
          % (source_node.type, source_node.name)
      )
      return
  
file_path: MMdnn/mmdnn/conversion/onnx/onnx_parser.py
imports: from mmdnn.conversion.common.DataStructure.parser import Parser
  from mmdnn.conversion.onnx.onnx_graph import ONNXGraph
label_desc: Use image node_id 4 for calling the ONNXParser obj's underlying member method code with example usage: obj.rename_UNKNOWN(source_node) without return types