protected function validateMiddleware($middleware): void
    {
        $middleware = $this->getMiddlewareClassName($middleware);
        $interfaces = \class_implements($middleware);

        if (! isset($interfaces[MiddlewareInterface::class])) {
            throw new UnexpectedValueException(
                \sprintf('%s is not implemented in [%s].', MiddlewareInterface::class, $middleware)
            );
        }
    }
protected function validateMiddleware($middleware): void
    {
        $middleware = $this->getMiddlewareClassName($middleware);
        $interfaces = \class_implements($middleware);

        if (! isset($interfaces[MiddlewareInterface::class])) {
            throw new UnexpectedValueException(
                \sprintf('%s is not implemented in [%s].', MiddlewareInterface::class, $middleware)
            );
        }
    }
protected function validateMiddleware ( $ middleware ) : void { $ middleware = $ this -> getMiddlewareClassName ( $ middleware ) ; $ interfaces = \ class_implements ( $ middleware ) ; if ( ! isset ( $ interfaces [ MiddlewareInterface :: class ] ) ) { throw new UnexpectedValueException ( \ sprintf ( '%s is not implemented in [%s].' , MiddlewareInterface :: class , $ middleware ) ) ; } }
Validates if given object or string has a middleware interface.

@param \Psr\Http\Server\MiddlewareInterface|string $middleware

@throws \Viserio\Component\Contract\Routing\Exception\UnexpectedValueException if \Psr\Http\Server\MiddlewareInterface was not found

@return void
Validates if given object or string has a middleware interface .