Sets the templating engine to use to render the default content.
EngineInterface|\Twig_Environment|null $templating An EngineInterface or a \Twig_Environment instance:
\InvalidArgumentException
public function setTemplating($templating) {
if (null !== $templating && !$templating instanceof EngineInterface && !$templating instanceof \Twig_Environment) {
throw new \InvalidArgumentException('The hinclude rendering strategy needs an instance of \\Twig_Environment or Symfony\\Component\\Templating\\EngineInterface');
}
$this->templating = $templating;
}