return new ITmfTreeColumnDataProvider() {
@Override
- public List<TmfTreeColumnData> getColumnData() {
+ public List<@Nullable TmfTreeColumnData> getColumnData() {
/* All columns are sortable */
- List<TmfTreeColumnData> columns = new ArrayList<>();
+ List<@Nullable TmfTreeColumnData> columns = new ArrayList<>();
TmfTreeColumnData column = new TmfTreeColumnData(COLUMN_NAMES[0]);
column.setComparator(new ViewerComparator() {
@Override