code: public static MemberUpdater updater(final String pathServiceSid, 
                                          final String pathChannelSid, 
                                          final String pathSid) {
          return new MemberUpdater(pathServiceSid, pathChannelSid, pathSid);
      }
docs: Create a MemberUpdater to execute update.
  
  @param pathServiceSid The SID of the Service to create the resource under
  @param pathChannelSid The unique ID of the channel the member to update
  belongs to
  @param pathSid The unique string that identifies the resource
  @return MemberUpdater capable of executing the update