code: public ServiceFuture<FaceList> getAsync(String faceListId, final ServiceCallback<FaceList> serviceCallback) {
          return ServiceFuture.fromResponse(getWithServiceResponseAsync(faceListId), serviceCallback);
      }
docs: Retrieve a face list's information.
  
  @param faceListId Id referencing a particular face list.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object