public function getRegistrationMethodValues($methodName)
    {
        if (isset($this->registrationMethodCache[$methodName])) {
            return $this->registrationMethodCache[$methodName];
        }

        $results = [];
        $plugins = $this->getPlugins();

        foreach ($plugins as $id => $plugin) {
            if (!method_exists($plugin, $methodName)) {
                continue;
            }

            $results[$id] = $plugin->{$methodName}();
        }

        return $this->registrationMethodCache[$methodName] = $results;
    }