Eclipse Luna - 如何折叠/折叠javascript私有函数

Question

我使用Eclipse Luna Java EE IDE for Web Developer

如何在类中折叠javascript私有函数？

  var ClientBattle = function(wtfClient){

        this.setDataPet = function(){
           // code in here can collapse
        }

        function generateBox(){
          // code in here cannot collapse
        }

    }

任何插件也会欣赏