private function AttachLayoutContent($isNew)
{
$provider = new LayoutContentTreeProvider($this->Area());
$tree = new TreeBuilder($provider);
$layoutContent = $this->Content()->GetLayoutContent();
if (!$layoutContent) {
$layoutContent = new LayoutContent();
$layoutContent->SetArea($this->Area());
$layoutContent->SetContent($this->Content());
}
$provider->AttachContent($layoutContent, $this->Content());
if ($isNew) {
$tree->Insert($layoutContent, $this->ParentItem(), $this->PreviousItem());
}
}
