docs: public Observable<AssetFilterInner> updateAsync(String resourceGroupName, String accountName, String assetName, String filterName, AssetFilterInner parameters) {
          return updateWithServiceResponseAsync(resourceGroupName, accountName, assetName, filterName, parameters).map(new Func1<ServiceResponse<AssetFilterInner>, AssetFilterInner>() {
              @Override
              public AssetFilterInner call(ServiceResponse<AssetFilterInner> response) {
                  return response.body();
              }
          });
      }