public function render()
{
?>
<!doctype html>
<html>
<head>
<title>dev-con</title>
</head>
<body>
<?php
$this->body->render();
?>
</body>
</html>
<?php
}
public function isEmpty()
{
return !$this->main || $this->main->isEmpty();
}
public function push(Renderer $element)
{
$element->render();
return $this;
}