code: def test_is_anchored(self):
      msg = "Week.is_anchored is deprecated "
  
      with tm.assert_produces_warning(FutureWarning, match=msg):
          assert Week(weekday=0).is_anchored()
          assert not Week().is_anchored()
          assert not Week(2, weekday=2).is_anchored()
          assert not Week(2).is_anchored()
  
imports: from __future__ import annotations
  from datetime import datetime, timedelta
  import pytest
  from pandas._libs.tslibs import Timestamp
  from pandas._libs.tslibs.offsets import Day, LastWeekOfMonth, Week, WeekOfMonth
  import pandas._testing
  from pandas.tests.tseries.offsets.common import WeekDay, assert_is_on_offset, assert_offset_equal
label_desc: Use image node_id 3 for calling the TestWeek obj's underlying member method code with example usage: obj.test_is_anchored() without return types