/**
* @param String $string
* @param $behavior
*/
private function registerString($string, $behavior)
{
$existingDoc = $this->findDocument($string->hash());
$doc = empty($existingDoc) ? $string->asDocument() : self::mergeStrings($existingDoc, $string->asDocument(), $behavior);
if (isset($doc['_id'])) {
$this->db->putDocument($doc, $doc['_id']);
} else {
$this->db->postDocument($doc);
}
}