@Test
public void loadStateFromProperties() throws Exception {
properties.put(KEY, "0:DESC:3|3:ASC:2|5:DESC:1|6:ASC:0|");
sortModel = SortModelFixture.getEmptyModel();
sortHeaderLayer = new SortHeaderLayer<RowDataFixture>(
new DataLayerFixture(10, 20, 100, 20), sortModel);
sortStatePersistor = new SortStatePersistor<RowDataFixture>(sortModel);
sortStatePersistor.loadState(TEST_PREFIX, properties);
ISortModel sortModel = sortHeaderLayer.getSortModel();
// Sort direction