code: def test_elu(self) -> None:
      self.assertTrue(defs.has("Elu"))
      node_def = helper.make_node("Elu", ["X"], ["Y"], alpha=1.0)
      checker.check_node(node_def)
  
imports: import unittest
  from onnx import checker, defs, helper
label_desc: Use image node_id 1 for calling the TestRelu obj's underlying member method code with example usage: obj.test_elu() without return types