PhoneNumberHandler { public List<String> getTimeZonesForNumber(Object data) { return PhoneNumberHandlerBase.getTimeZonesForNumber(data, defaultRegion); }  boolean isValidPhoneNumber(Object data); boolean isPossiblePhoneNumber(Object data); String formatE164(Object data); String formatInternational(Object data); String formatNational(Object data); String formatRFC396(Object data); PhoneNumberTypeEnum getPhoneNumberType(Object data); List<String> getTimeZonesForNumber(Object data); String getGeocoderDescriptionForNumber(Object data); String getCarrierNameForNumber(Object data); Locale getDefaultLocale(); void setDefaultLocale(Locale defaultLocale); String getDefaultRegion(); void setDefaultRegion(String defaultRegion);  }
@Test public void testGetTimeZonesForNumber() { assertEquals("[America/Los_Angeles]", handler.getTimeZonesForNumber(US_NUM_1).toString()); assertEquals("[America/Los_Angeles]", handler.getTimeZonesForNumber(US_NUM_2).toString()); }