code: def test_DatetimeEquals(self) -> None:
      now = datetime.now()
      self.assertTrue(datetime_equals(None, None))
      self.assertFalse(datetime_equals(None, now))
      self.assertTrue(datetime_equals(now, now))
  
file_path: Ax/ax/utils/common/tests/test_equality.py
imports: from datetime import datetime
  import numpy
  import pandas
  from ax.utils.common.equality import dataframe_equals, datetime_equals, equality_typechecker, object_attribute_dicts_find_unequal_fields, same_elements
  from ax.utils.common.testutils import TestCase
label_desc: Use image node_id 3 for calling the EqualityTest obj's underlying member method code with example usage: obj.test_DatetimeEquals() without return types