public function addMediaFromUrl(string $url, array $allowedMimeTypes = []): FileAdder;  	public function addMediaFromString(string $text): FileAdder;  	public function addMediaFromBase64(string $base64data, array $allowedMimeTypes = []): FileAdder;  	public function addMediaFromStream(mixed $stream): FileAdder;  	public function addMediaCollection(string $name): MediaCollection; }