code: def __new__(cls, clsname, bases, attrs):
      calendar_class = super(HolidayCalendarMetaClass, cls).__new__(
          cls, clsname, bases, attrs
      )
      register(calendar_class)
      return calendar_class
  
imports: from datetime import datetime, timedelta
  import warnings
  from dateutil.relativedelta import FR, MO, SA, SU, TH, TU, WE
  import numpy
  from pandas.compat import add_metaclass
  from pandas.errors import PerformanceWarning
  from pandas import DateOffset, Series, Timestamp, date_range
  from pandas.tseries.offsets import Day, Easter
label_desc: Use image node_id 1 for calling the HolidayCalendarMetaClass obj's underlying member method code with example usage: obj.__new__(cls, clsname, bases, attrs) and returns: calendar_class