     public func removeFromParent() {
        invokeMethod("removeFromParent", withArguments: [])
     }
-
+    
     public var attributes: [String:String] {
         return valueForProperty("attributes").toDictionary() as? [String:String] ?? [:]
     }

        return valueForProperty("children").toItemTypeArray() 
    }
    
    public func insertChildren(children: [ItemType], beforeSibling: ItemType?) {
        let mapped: [AnyObject] = children.map { $0 }
        if let beforeSibling = beforeSibling {

    var previousSibling: ItemType? { get }
    var nextSibling: ItemType? { get }
    var children: [ItemType] { get }

    func contains(item: ItemType) -> Bool

    func insertChildren(children: [ItemType], beforeSibling: ItemType?)
    func appendChildren(children: [ItemType])
