code: public static FunctionUpdater updater(final String pathServiceSid, 
                                            final String pathSid, 
                                            final String friendlyName) {
          return new FunctionUpdater(pathServiceSid, pathSid, friendlyName);
      }
docs: Create a FunctionUpdater to execute update.
  
  @param pathServiceSid The service_sid
  @param pathSid The sid
  @param friendlyName The friendly_name
  @return FunctionUpdater capable of executing the update