code: public Observable<UserInner> getPublishingUserAsync() {
          return getPublishingUserWithServiceResponseAsync().map(new Func1<ServiceResponse<UserInner>, UserInner>() {
              @Override
              public UserInner call(ServiceResponse<UserInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets publishing user.
  Gets publishing user.
  
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the UserInner object