private function normalizeFeatures(array $features) { $result = []; foreach ($features as $key => $feature) { $maxResults = $this->maxResult($feature); if (array_key_exists($feature, $this->featureShortNames)) { $feature = $this->featureShortNames[$feature]; } $result[] = array_filter(['type' => $feature, 'maxResults' => $maxResults]); } return $result; }