public function getModelConfiguration($objectName)
    {
        if (isset($this->configuration[$objectName])) {
            $modelConfiguration = $this->configuration[$objectName];
            $modelConfiguration['__object_name'] = $objectName;
            if (isset($modelConfiguration['fields']) === false) {
                $modelConfiguration['fields'] = array();
            }

            return $modelConfiguration;
        }
    }