protected function getEndpointsInClasses(SimpleAnnotationReader $reader)
    {
        $endpoints = new EndpointCollection();

        foreach ($this->getClassesToScan() as $class) {
            $endpoints = $endpoints->merge($this->getEndpointsInClass(
                $class, new AnnotationSet($class, $reader)
            ));
        }

        return $endpoints;
    }