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