@Override
public GranuleSource getGranules(String coverageName, boolean readOnly) throws IOException,
UnsupportedOperationException {
NetCDFImageReader reader = (NetCDFImageReader) ((NetCDFAccess)access).reader;
final CoverageSlicesCatalog catalog = reader.getCatalog();
return new CoverageSlicesCatalogSource(catalog, coverageName);
}