GlobalClusterIdentifier: The user-supplied DB cluster identifier. If this parameter is specified, only information about the specified DB cluster is returned. This parameter is not case-sensitive.
Constraints: If supplied, must match an existing DB cluster identifier.
MaxRecords: The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a pagination marker token is included in the response that you can use to retrieve the remaining results.
Default: 100
Constraints: Minimum 20, maximum 100.
Marker: (Optional) A pagination token returned by a previous call to describe_global_clusters. If this parameter is specified, the response will only include records beyond the marker, up to the number specified by MaxRecords.