code: func (c *Redshift) DescribeClusterDbRevisions(input *DescribeClusterDbRevisionsInput) (*DescribeClusterDbRevisionsOutput, error) {
  	req, out := c.DescribeClusterDbRevisionsRequest(input)
  	return out, req.Send()
  }
docs: // DescribeClusterDbRevisions API operation for Amazon Redshift.
  //
  // Returns an array of ClusterDbRevision objects.
  //
  // Returns awserr.Error for service API and SDK errors. Use runtime type assertions
  // with awserr.Error's Code and Message methods to get detailed information about
  // the error.
  //
  // See the AWS API reference guide for Amazon Redshift's
  // API operation DescribeClusterDbRevisions for usage and error information.
  //
  // Returned Error Codes:
  //   * ErrCodeClusterNotFoundFault "ClusterNotFound"
  //   The ClusterIdentifier parameter does not refer to an existing cluster.
  //
  //   * ErrCodeInvalidClusterStateFault "InvalidClusterState"
  //   The specified cluster is not in the available state.
  //
  // See also, https://docs.aws.amazon.com/goto/WebAPI/redshift-2012-12-01/DescribeClusterDbRevisions