code: @Override
      public DescribeClusterDbRevisionsResult describeClusterDbRevisions(DescribeClusterDbRevisionsRequest request) {
          request = beforeClientExecution(request);
          return executeDescribeClusterDbRevisions(request);
      }
docs: <p>
  Returns an array of <code>ClusterDbRevision</code> objects.
  </p>
  
  @param describeClusterDbRevisionsRequest
  @return Result of the DescribeClusterDbRevisions 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.
  @sample AmazonRedshift.DescribeClusterDbRevisions
  @see <a href="http://docs.aws.amazon.com/goto/WebAPI/redshift-2012-12-01/DescribeClusterDbRevisions"
  target="_top">AWS API Documentation</a>