use in list rendering, if your component has one menu,you may not need it.
the menu name
Positional coordinates displayed on menus,the x is clientX and y is clientY
menu options. the "btnName" is the menu name and "icoName" is the icon name,can config or not.and "children" to set its submenu."fnHandler" is the menu handler.
Supporting Infinite Submenus,but there's no that the style will fit perfectly.