43     private SelectionTracker<String> mDelegate = new StubSelectionTracker<>();  field in DocsSelectionHelper
51         if (mDelegate != null) {  in reset()
52             mDelegate.clearSelection();  in reset()
54         mDelegate = mFactory.create(selectionTracker);  in reset()
59         mDelegate.addObserver(listener);  in addObserver()
64         return mDelegate.hasSelection();  in hasSelection()
69         return mDelegate.getSelection();  in getSelection()
74         mDelegate.copySelection(dest);  in copySelection()
79         return mDelegate.isSelected(id);  in isSelected()
84         mDelegate.clearSelection();  in replaceSelection()
85         mDelegate.setItemsSelected(ids, true);  in replaceSelection()
90         return mDelegate.setItemsSelected(ids, selected);  in setItemsSelected()
95         return mDelegate.clearSelection();  in clearSelection()
100         return mDelegate.select(modelId);  in select()
105         return mDelegate.deselect(modelId);  in deselect()
110         mDelegate.startRange(pos);  in startRange()
115         mDelegate.extendRange(pos);  in extendRange()
120         mDelegate.endRange();  in endRange()
125         return mDelegate.isRangeActive();  in isRangeActive()
130         mDelegate.anchorRange(position);  in anchorRange()
135         mDelegate.onSaveInstanceState(state);  in onSaveInstanceState()
140         mDelegate.onRestoreInstanceState(state);  in onRestoreInstanceState()