void setSortColumn (TableColumn column) {
public void setSortColumn (TableColumn column) {
/*public*/ void setSortColumn (TableColumn column) {	checkWidget ();	if (column != null && column.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);	if (sortColumn != null && !sortColumn.isDisposed()) {		OS.gtk_tree_view_column_set_sort_indicator (sortColumn.handle, false);	}	sortColumn = column;	if (sortColumn != null && sortDirection != SWT.NONE) {		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);	}}