class_docstr: Domain interface.
      
class_docstr_tok: ["Domain","interface","."]
docstr: The country code for this domain.
  
  Returns
  -------
  code : str
      The two-character country iso3166 country code for this domain.
code: def country_code(self):
      """The country code for this domain.
  
      Returns
      -------
      code : str
          The two-character country iso3166 country code for this domain.
      """
  
imports: import datetime
  from textwrap import dedent
  from interface import default, implements, Interface
  import numpy
  import pandas
  import pytz
  from trading_calendars import get_calendar
  from zipline.country import CountryCode
  from zipline.utils.formatting import bulleted_list
  from zipline.utils.input_validation import expect_types, optional
  from zipline.utils.memoize import lazyval
  from zipline.utils.pandas_utils import days_at_time
label_desc: Use image node_id 2 for calling the IDomain obj's underlying member method code with example usage: obj.country_code() without return types