src/Type/Definition/Type.php
public static function assertType($type)
    {
        Utils::invariant(
            self::isType($type),
            'Expected ' . Utils::printSafe($type) . ' to be a GraphQL type.'
        );

        return $type;
    }
public static function assertType($type)
    {
        Utils::invariant(
            self::isType($type),
            'Expected ' . Utils::printSafe($type) . ' to be a GraphQL type.'
        );

        return $type;
    }
public static function assertType ( $ type ) { Utils :: invariant ( self :: isType ( $ type ) , 'Expected ' . Utils :: printSafe ( $ type ) . ' to be a GraphQL type.' ) ; return $ type ; }
@param mixed $type

@return mixed
@param mixed $type