code: def test_get_default_holidays_invalid_times(self):
      times = ["2012-12-25", "2013-01-01"]
      country = "US"
      with self.assertRaises(Exception):
          holiday_effects.get_default_holidays(times, country)
  
file_path: probability/tensorflow_probability/python/sts/holiday_effects_test.py
imports: from absl.testing import parameterized
  import pandas
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.sts import holiday_effects
label_desc: Use image node_id 2 for calling the HolidayEffectsTest obj's underlying member method code with example usage: obj.test_get_default_holidays_invalid_times() without return types