GridSubset gridSubset = layer.getGridSubset(gridSetId);
xml.indentElement("TileMatrixSetLink");
xml.simpleElement("TileMatrixSet", gridSubset.getName(), true);
if (! gridSubset.fullGridSetCoverage()) {
String[] levelNames = gridSubset.getGridNames();
long[][] wmtsLimits = gridSubset.getWMTSCoverages();
xml.indentElement("TileMatrixSetLimits");
for (int i = 0; i < levelNames.length; i++) {