question: returns a string with the icu unknown time zone . concode_field_sep String UNKNOWN_TIMEZONE concode_elem_sep Logger LOGGER concode_elem_sep List<String> UNKNOWN_TIME_ZONE_LIST concode_elem_sep PhoneNumberToTimeZonesMapper INSTANCE concode_elem_sep String MAPPING_DATA_DIRECTORY concode_elem_sep String MAPPING_DATA_FILE_NAME concode_elem_sep PrefixTimeZonesMap prefixTimeZonesMap concode_field_sep boolean canBeGeocoded concode_elem_sep List<String> getTimeZonesForGeographicalNumber concode_elem_sep List<String> getCountryLevelTimeZonesforNumber concode_elem_sep List<String> getTimeZonesForGeocodableNumber concode_elem_sep PrefixTimeZonesMap loadPrefixTimeZonesMapFromFile concode_elem_sep PhoneNumberToTimeZonesMapper getInstance concode_elem_sep List<String> getTimeZonesForNumber concode_elem_sep void close
target: String function ( ) { return UNKNOWN_TIMEZONE ; }