private static TripleCollection convertToXMP(MetaData<? extends DataSet> metaData, String formatName) {
MultivaluedMapImpl<String, String> nameSpaceClusters =
new MultivaluedMapImpl<String, String>();
for(List<? extends DataSet> dataSetList : metaData) {
DataSetFormatPair key = new DataSetFormatPair(
dataSetList.get(0).getKey(), formatName);
if(DataSet.conversionMap.containsKey(key)) {
DataSetSerializer xmpSerializer = DataSet.conversionMap.get(key);
nameSpaceClusters.add(xmpSerializer.key, xmpSerializer.serialize(