bool offsetExists(mixed $key) Determine if an item exists at an offset

BinaryFileResponse file(SplFileInfo|string $file, array $headers = array())

$this middlewareGroup(string $name, array $middleware) Register a group

mixed|null median(null $key = null) Get the median of a given key.

array parameterNames() Get all of the parameter names for the route.

string asset(string $path, bool $secure = null) Generate the URL to an

mixed __call(string $method, array $parameters) Dynamically handle calls

void singularResourceParameters(bool $singular = true) Set the unmapped

bool is() Alias for the "currentRouteNamed" method.

Collection diffKeys(mixed $items)