void () { test(TreeSelectionModel.SINGLE_TREE_SELECTION, tree -> { select(tree, 10); testIncreaseDecrease(tree, """ -Root -Color Red Green Blue +Digit -Letter -Greek Alpha Beta [Gamma] Delta Epsilon """, // 1 // 1 // 1 // do nothing """ -Root -Color Red Green Blue +Digit -Letter -Greek Alpha Beta [Gamma] Delta Epsilon """, // 2 // 2 // 2 // do nothing """ -Root -Color Red Green Blue +Digit -Letter -Greek Alpha Beta [Gamma] Delta Epsilon """); }); }