code: def test_relu(self) -> None:
      self.assertTrue(defs.has("Relu"))
      helper.make_node("Relu", ["X"], ["Y"])
  
imports: import unittest
  from onnx import defs, helper
label_desc: Use image node_id 1 for calling the TestRelu obj's underlying member method code with example usage: obj.test_relu() without return types