internal ElementHandle(IChannelOwner parent, string guid, ElementHandleInitializer initializer) : base(parent, guid, initializer)
 {
     _channel = new ElementHandleChannel(guid, parent.Connection, this);
     _channel.PreviewUpdated += (_, e) => Preview = e.Preview;
 }
 internal ElementHandle(ConnectionScope scope, string guid, ElementHandleInitializer initializer)
 {
     _scope   = scope;
     _channel = new ElementHandleChannel(guid, scope, this);
 }