public java.util.List<String> getSourceRegions() {
        if (sourceRegions == null) {
            sourceRegions = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return sourceRegions;
    }
<p>
The <code>SyncSource</code> Amazon Web Services Regions included in the resource data sync.
</p>

@return The <code>SyncSource</code> Amazon Web Services Regions included in the resource data sync.
aws-java-sdk-ssm/src/main/java/com/amazonaws/services/simplesystemsmanagement/model/ResourceDataSyncSource.java