code: def _get_default_headers(cls):
          
  
          return {
              cls.HEADER_USER_AGENT: cls._USER_AGENT_BUNQ,
              cls.HEADER_REQUEST_ID: cls._generate_random_request_id(),
              cls.HEADER_GEOLOCATION: cls._GEOLOCATION_ZERO,
              cls.HEADER_LANGUAGE: cls._LANGUAGE_EN_US,
              cls.HEADER_REGION: cls._REGION_NL_NL,
              cls.HEADER_CACHE_CONTROL: cls._CACHE_CONTROL_NONE,
          }
docs: :rtype: dict[str, str]