GraphQL\Examples\Blog\Types::nonNull PHP Method

    public static function nonNull($type)
    {
        return new NonNull($type);
    }

 public function __construct()
 {
     $config = ['name' => 'Query', 'fields' => ['user' => ['type' => Types::user(), 'description' => 'Returns user by id (in range of 1-5)', 'args' => ['id' => Types::nonNull(Types::id())]], 'viewer' => ['type' => Types::user(), 'description' => 'Represents currently logged-in user (for the sake of example - simply returns user with id == 1)'], 'stories' => ['type' => Types::listOf(Types::story()), 'description' => 'Returns subset of stories posted for this blog', 'args' => ['after' => ['type' => Types::id(), 'description' => 'Fetch stories listed after the story with this ID'], 'limit' => ['type' => Types::int(), 'description' => 'Number of stories to be returned', 'defaultValue' => 10]]], 'lastStoryPosted' => ['type' => Types::story(), 'description' => 'Returns last story posted for this blog'], 'deprecatedField' => ['type' => Types::string(), 'deprecationReason' => 'This field is deprecated!'], 'fieldWithException' => ['type' => Types::string(), 'resolve' => function () {
         throw new \Exception("Exception message thrown in field resolver");
     }], 'hello' => Type::string()], 'resolveField' => function ($val, $args, $context, ResolveInfo $info) {
         return $this->{$info->fieldName}($val, $args, $context, $info);
     }];
     parent::__construct($config);
 }