docs: public Observable<DataWarehouseUserActivityInner> getAsync(String resourceGroupName, String serverName, String databaseName) {
          return getWithServiceResponseAsync(resourceGroupName, serverName, databaseName).map(new Func1<ServiceResponse<DataWarehouseUserActivityInner>, DataWarehouseUserActivityInner>() {
              @Override
              public DataWarehouseUserActivityInner call(ServiceResponse<DataWarehouseUserActivityInner> response) {
                  return response.body();
              }
          });
      }