/**
* Register a sharing backend class that implements OCP\Share_Backend for an item type
* @param string $itemType Item type
* @param string $class Backend class
* @param string $collectionOf (optional) Depends on item type
* @param array $supportedFileExtensions (optional) List of supported file extensions if this item type depends on files
* @return boolean true if backend is registered or false if error
*/
public static function registerBackend($itemType, $class, $collectionOf = null, $supportedFileExtensions = null)
{
return \OC\Share\Share::registerBackend($itemType, $class, $collectionOf, $supportedFileExtensions);
}
