code: public Observable<Integer> addPhraseListAsync(UUID appId, String versionId, PhraselistCreateObject phraselistCreateObject) {
          return addPhraseListWithServiceResponseAsync(appId, versionId, phraselistCreateObject).map(new Func1<ServiceResponse<Integer>, Integer>() {
              @Override
              public Integer call(ServiceResponse<Integer> response) {
                  return response.body();
              }
          });
      }
docs: Creates a new phraselist feature.
  
  @param appId The application ID.
  @param versionId The version ID.
  @param phraselistCreateObject A Phraselist object containing Name, comma-separated Phrases and the isExchangeable boolean. Default value for isExchangeable is true.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the Integer object