src/Chiron/Routing/Traits/RouteCollectionTrait.php
public function head(string $pattern, $handler): Route
    {
        return $this->map($pattern, $handler)->method('HEAD');
    }
public function head(string $pattern, $handler): Route
    {
        return $this->map($pattern, $handler)->method('HEAD');
    }
public function head ( string $ pattern , $ handler ) : Route { return $ this -> map ( $ pattern , $ handler ) -> method ( 'HEAD' ) ; }
Add HEAD route.

HEAD was added to HTTP/1.1 in RFC2616

@see https://tools.ietf.org/html/rfc7231#section-4.3.2
@see https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html#sec9.4

@param string          $pattern The route URI pattern
@param callable|string $handler The route callback routine

@return \Chiron\Routing\Route
Add HEAD route .