code: @Override
      public BacktrackDBClusterResult backtrackDBCluster(BacktrackDBClusterRequest request) {
          request = beforeClientExecution(request);
          return executeBacktrackDBCluster(request);
      }
docs: <p>
  Backtracks a DB cluster to a specific time, without creating a new DB cluster.
  </p>
  <p>
  For more information on backtracking, see <a
  href="https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/AuroraMySQL.Managing.Backtrack.html">
  Backtracking an Aurora DB Cluster</a> in the <i>Amazon Aurora User Guide.</i>
  </p>
  <note>
  <p>
  This action only applies to Aurora DB clusters.
  </p>
  </note>
  
  @param backtrackDBClusterRequest
  @return Result of the BacktrackDBCluster operation returned by the service.
  @throws DBClusterNotFoundException
  <i>DBClusterIdentifier</i> doesn't refer to an existing DB cluster.
  @throws InvalidDBClusterStateException
  The requested operation can't be performed while the cluster is in this state.
  @sample AmazonRDS.BacktrackDBCluster
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/rds-2014-10-31/BacktrackDBCluster" target="_top">AWS API
  Documentation</a>