code: function setChildsProperty(prop, val, recursive) {
           for (var i = this.children.length; i >= 0; i--) {
             var obj = this.children[i];
  
             if (recursive === true && obj instanceof me.Container) {
               obj.setChildsProperty(prop, val, recursive);
             }
  
             obj[prop] = val;
           }
         }
docs: Automatically set the specified property of all childs to the given value
  @name setChildsProperty
  @memberOf me.Container.prototype
  @function
  @param {String} property property name
  @param {Object} value property value
  @param {Boolean} [recursive=false] recursively apply the value to child containers if true