/**
* @param string|object $extension
*
* @return boolean
*/
public function hasExtension($extension)
{
if ($extension instanceof ExtensionInterface) {
$extension = $extension->getName();
}
return $this->extensions->exists($extension);
}
/**
* Adds a factory extension.
*
* @param ExtensionInterface $extension
* @param int $priority
*/
public function addExtension(ExtensionInterface $extension, $priority = 0)
{
$this->extensions->insert($extension, $priority);
}