code: func (c *Redshift) CreateClusterSnapshot(input *CreateClusterSnapshotInput) (*CreateClusterSnapshotOutput, error) {
  	req, out := c.CreateClusterSnapshotRequest(input)
  	return out, req.Send()
  }
docs: // CreateClusterSnapshot API operation for Amazon Redshift.
  //
  // Creates a manual snapshot of the specified cluster. The cluster must be in
  // the available state.
  //
  // For more information about working with snapshots, go to Amazon Redshift
  // Snapshots (https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-snapshots.html)
  // in the Amazon Redshift Cluster Management Guide.
  //
  // 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 CreateClusterSnapshot for usage and error information.
  //
  // Returned Error Codes:
  //   * ErrCodeClusterSnapshotAlreadyExistsFault "ClusterSnapshotAlreadyExists"
  //   The value specified as a snapshot identifier is already used by an existing
  //   snapshot.
  //
  //   * ErrCodeInvalidClusterStateFault "InvalidClusterState"
  //   The specified cluster is not in the available state.
  //
  //   * ErrCodeClusterNotFoundFault "ClusterNotFound"
  //   The ClusterIdentifier parameter does not refer to an existing cluster.
  //
  //   * ErrCodeClusterSnapshotQuotaExceededFault "ClusterSnapshotQuotaExceeded"
  //   The request would result in the user exceeding the allowed number of cluster
  //   snapshots.
  //
  //   * ErrCodeTagLimitExceededFault "TagLimitExceededFault"
  //   You have exceeded the number of tags allowed.
  //
  //   * ErrCodeInvalidTagFault "InvalidTagFault"
  //   The tag is invalid.
  //
  //   * ErrCodeInvalidRetentionPeriodFault "InvalidRetentionPeriodFault"
  //   The retention period specified is either in the past or is not a valid value.
  //
  //   The value must be either -1 or an integer between 1 and 3,653.
  //
  // See also, https://docs.aws.amazon.com/goto/WebAPI/redshift-2012-12-01/CreateClusterSnapshot