void setSortDirection  (int direction) {
public void setSortDirection  (int direction) {
/*public*/ void setSortDirection  (int direction) {	checkWidget ();	if ((direction & (SWT.UP | SWT.DOWN)) == 0 && direction != SWT.NONE) return;	sortDirection = direction;	if (sortColumn == null || sortColumn.isDisposed ()) return;	if (sortDirection == SWT.NONE) {		OS.gtk_tree_view_column_set_sort_indicator (sortColumn.handle, false);	} else {		OS.gtk_tree_view_column_set_sort_indicator (sortColumn.handle, true);		OS.gtk_tree_view_column_set_sort_order (sortColumn.handle, sortDirection == SWT.DOWN ? 0 : 1);	}}