protected function getEntryList($xmlString)
    {
        $xml = simplexml_load_string($xmlString);

        if ($xml->getName() == Resources::ENTRY) {
            $entry = new Entry();
            $entry->fromXml($xml);
            $entries = [$entry];
        } else {
            $feed = new Feed();
            $feed->parseXml($xmlString);
            $entries = $feed->getEntry();
        }

        $result = [];
        if (is_array($entries)) {
            foreach ($entries as $entry) {
                $properties = $this->getPropertiesFromAtomEntry($entry);
                if (!empty($properties)) {
                    $result[] = $properties;
                }
            }
        }

        return $result;
    }