code: def create_helper_trans_node(op_name, input_node, node_name):
      
      node_name = op_name + "_" + node_name
      trans_node = onnx.helper.make_node(
          'Transpose',
          inputs=[input_node],
          outputs=[node_name],
          name=node_name
      )
      return trans_node
docs: create extra transpose node for dot operator