docs: public Observable<ListEnvironmentsResponseInner> listEnvironmentsAsync(String userName) {
          return listEnvironmentsWithServiceResponseAsync(userName).map(new Func1<ServiceResponse<ListEnvironmentsResponseInner>, ListEnvironmentsResponseInner>() {
              @Override
              public ListEnvironmentsResponseInner call(ServiceResponse<ListEnvironmentsResponseInner> response) {
                  return response.body();
              }
          });
      }