code: def test_attr_default_value(self) -> None:
      v = (
          defs.get_schema("BatchNormalization")
          .attributes["epsilon"]
          .default_value
      )
      self.assertEqual(type(v), onnx.AttributeProto)
      self.assertEqual(v.type, onnx.AttributeProto.FLOAT)
  
imports: import unittest
  from typing import Sequence
  import parameterized
  import onnx
  from onnx import defs
label_desc: Use image node_id 3 for calling the TestSchema obj's underlying member method code with example usage: obj.test_attr_default_value() without return types