     if let action = action {
       dictionary[Key.Action.string] = action
     }
+
+    dictionary[Key.Children.string] = children
 
     var relationItems = [String : [JSONDictionary]]()
 

    lhs.image == rhs.image &&
    lhs.kind == rhs.kind &&
    lhs.action == rhs.action &&
    (lhs.meta as NSDictionary).isEqual(rhs.meta as NSDictionary) &&
    compareRelations(lhs, rhs)
}

  public var action: String?
  /// The width and height of the view model, usually calculated and updated by the UI component
  public var size = CGSize(width: 0, height: 0)
  /// A collection of items used for composition
  public var children: JSONArray = []
  /// A key-value dictionary for any additional information
  public var meta = [String : AnyObject]()
  /// A key-value dictionary for related view models
