private static function getInterfaces(\ReflectionClass $class)
{
$classes = array();
foreach ($class->getInterfaces() as $interface) {
$classes = array_merge($classes, self::getInterfaces($interface));
}
if ($class->isUserDefined() && $class->isInterface() && !isset(self::$seen[$class->getName()])) {
self::$seen[$class->getName()] = true;
$classes[] = $class;
}
return $classes;
}