折叠某一行函数: CMD + OPTION/ALT + LEFT/RIGHT;
全局折叠: CMD + SHIFT + OPTION/ALT + LEFT/RIGHT;
折叠注释文档(/**/)CMD + SHIFT + CTRL + LEFT/RIGHT;
折叠某一行函数: CMD + OPTION/ALT + LEFT/RIGHT;
全局折叠: CMD + SHIFT + OPTION/ALT + LEFT/RIGHT;
折叠注释文档(/**/)CMD + SHIFT + CTRL + LEFT/RIGHT;