code: public Observable<DataLakeStoreAccountInner> updateAsync(String resourceGroupName, String name, DataLakeStoreAccountInner parameters) {
          return updateWithServiceResponseAsync(resourceGroupName, name, parameters).map(new Func1<ServiceResponse<DataLakeStoreAccountInner>, DataLakeStoreAccountInner>() {
              @Override
              public DataLakeStoreAccountInner call(ServiceResponse<DataLakeStoreAccountInner> response) {
                  return response.body();
              }
          });
      }
docs: Updates the specified Data Lake Store account information.
  
  @param resourceGroupName The name of the Azure resource group that contains the Data Lake Store account.
  @param name The name of the Data Lake Store account to update.
  @param parameters Parameters supplied to update the Data Lake Store account.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable for the request