--- date: 20201117 id: f0c76a12-b940-461d-8888-fecdab2fa971 title: Required --- # Description Attribute replacement for [@required](20201117112017-required). # Syntax ``` php use Symfony\Contracts\Service\Attribute\Required; class SomeService { #[Required] public Bar $bar; #[Required] public function setFoo(Foo $foo): void { // ... } } ```