docs: public ServiceFuture<BackupLongTermRetentionPolicyInner> listByDatabaseAsync(String resourceGroupName, String serverName, String databaseName, final ServiceCallback<BackupLongTermRetentionPolicyInner> serviceCallback) {
          return ServiceFuture.fromResponse(listByDatabaseWithServiceResponseAsync(resourceGroupName, serverName, databaseName), serviceCallback);
      }