@Override
			public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
				if (adapter != null) {
					adapter.getExpandToggleButton(view).performClick();
				}
			}
Registers a OnItemClickListener for this listview which will
expand the item by default. Any other OnItemClickListener will be overriden.

To undo call setOnItemClickListener(null)

Important: This method call setOnItemClickListener, so the value will be reset
library/src/main/java/com/tjerkw/slideexpandable/library/SlideExpandableListView.java