code: @Override
      public DBCluster deleteDBCluster(DeleteDBClusterRequest request) {
          request = beforeClientExecution(request);
          return executeDeleteDBCluster(request);
      }
docs: <p>
  The DeleteDBCluster action deletes a previously provisioned DB cluster. When you delete a DB cluster, all
  automated backups for that DB cluster are deleted and can't be recovered. Manual DB cluster snapshots of the
  specified DB cluster are not deleted.
  </p>
  <p/>
  
  @param deleteDBClusterRequest
  @return Result of the DeleteDBCluster operation returned by the service.
  @throws DBClusterNotFoundException
  <i>DBClusterIdentifier</i> does not refer to an existing DB cluster.
  @throws InvalidDBClusterStateException
  The DB cluster is not in a valid state.
  @throws DBClusterSnapshotAlreadyExistsException
  User already has a DB cluster snapshot with the given identifier.
  @throws SnapshotQuotaExceededException
  Request would result in user exceeding the allowed number of DB snapshots.
  @throws InvalidDBClusterSnapshotStateException
  The supplied value is not a valid DB cluster snapshot state.
  @sample AmazonNeptune.DeleteDBCluster
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/neptune-2014-10-31/DeleteDBCluster" target="_top">AWS API
  Documentation</a>