code: @Override
      public Cluster rotateEncryptionKey(RotateEncryptionKeyRequest request) {
          request = beforeClientExecution(request);
          return executeRotateEncryptionKey(request);
      }
docs: <p>
  Rotates the encryption keys for a cluster.
  </p>
  
  @param rotateEncryptionKeyRequest
  @return Result of the RotateEncryptionKey operation returned by the service.
  @throws ClusterNotFoundException
  The <code>ClusterIdentifier</code> parameter does not refer to an existing cluster.
  @throws InvalidClusterStateException
  The specified cluster is not in the <code>available</code> state.
  @throws DependentServiceRequestThrottlingException
  The request cannot be completed because a dependent service is throttling requests made by Amazon
  Redshift on your behalf. Wait and retry the request.
  @sample AmazonRedshift.RotateEncryptionKey
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/redshift-2012-12-01/RotateEncryptionKey" target="_top">AWS
  API Documentation</a>