@Override
    public AddRoleToDBClusterResult addRoleToDBCluster(AddRoleToDBClusterRequest request) {
        request = beforeClientExecution(request);
        return executeAddRoleToDBCluster(request);
    }
<p>
Associates an Identity and Access Management (IAM) role with a DB cluster.
</p>

@param addRoleToDBClusterRequest
@return Result of the AddRoleToDBCluster operation returned by the service.
@throws DBClusterNotFoundException
        <code>DBClusterIdentifier</code> doesn't refer to an existing DB cluster.
@throws DBClusterRoleAlreadyExistsException
        The specified IAM role Amazon Resource Name (ARN) is already associated with the specified DB cluster.
@throws InvalidDBClusterStateException
        The requested operation can't be performed while the cluster is in this state.
@throws DBClusterRoleQuotaExceededException
        You have exceeded the maximum number of IAM roles that can be associated with the specified DB cluster.
@sample AmazonRDS.AddRoleToDBCluster
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/rds-2014-10-31/AddRoleToDBCluster" target="_top">AWS API
     Documentation</a>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/AmazonRDSClient.java