code: def test_is_leap_year(self):
      years = np.array(
          [
              1600,
              1700,
              1800,
              1900,
              1901,
              1903,
              1904,
              1953,
              2000,
              2020,
              2025,
              2100,
          ]
      )
      expected = np.array(
          [
              True,
              False,
              False,
              False,
              False,
              False,
              True,
              False,
              True,
              True,
              False,
              False,
          ]
      )
      self.assertAllEqual(expected, date_utils.is_leap_year(years))
  
file_path: tf-quant-finance/tf_quant_finance/datetime/date_utils_test.py
imports: import datetime
  import numpy
  import tensorflow.compat.v2
  import tf_quant_finance
  from tf_quant_finance.datetime import test_data
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 3 for calling the DateUtilsTest obj's underlying member method code with example usage: obj.test_is_leap_year() without return types