code: def test_add_business_days(self):
      data = test_data.add_days_data
      date_tensor = dates.dates_from_tuples(
          [item["date"] for item in data]
      )
      days = tf.constant([item["days"] for item in data])
      expected_dates = dates.dates_from_tuples(
          [item["shifted_date"] for item in data]
      )
      cal = self.impl(
          weekend_mask=dates.WeekendMask.SATURDAY_SUNDAY,
          holidays=test_data.holidays,
      )
      actual_dates = cal.add_business_days(
          date_tensor,
          days,
          roll_convention=dates.BusinessDayConvention.MODIFIED_FOLLOWING,
      )
      self.assertAllEqual(
          expected_dates.ordinal(), actual_dates.ordinal()
      )
  
imports: import datetime
  import functools
  from absl.testing import parameterized
  import numpy
  import tensorflow.compat.v2
  import tf_quant_finance
  from tf_quant_finance.datetime import bounded_holiday_calendar
  from tf_quant_finance.datetime import test_data
  from tf_quant_finance.datetime import unbounded_holiday_calendar
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 8 for calling the HolidayCalendarTest obj's underlying member method code with example usage: obj.test_add_business_days() without return types