Swagger\Analysis::getSubClasses PHP Method

    public function getSubClasses($class)
    {
        $definitions = [];
        foreach ($this->classes as $subclass => $definition) {
            if ($definition['extends'] === $class) {
                $definitions[$subclass] = $definition;
                $definitions = array_merge($definitions, $this->getSubClasses($subclass));
            }
        }
        return $definitions;
    }