public String getSourceSnapshotClusterIdentifier() {
        return this.sourceSnapshotClusterIdentifier;
    }
<p>
The identifier of the cluster the source snapshot was created from. This parameter is required if your IAM user
has a policy containing a snapshot resource element that specifies anything other than * for the cluster name.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must be the identifier for a valid cluster.
</p>
</li>
</ul>

@return The identifier of the cluster the source snapshot was created from. This parameter is required if your
        IAM user has a policy containing a snapshot resource element that specifies anything other than * for the
        cluster name.</p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        Must be the identifier for a valid cluster.
        </p>
        </li>
aws-java-sdk-redshift/src/main/java/com/amazonaws/services/redshift/model/CopyClusterSnapshotRequest.java