/**
  * Reads a MultiText from the XmlNode $sxeNode given by the element 'gloss'
  *
  * @param \SimpleXMLElement $sxeNode
  * @param LexMultiText $multiText
  * @param ArrayOf $inputSystems
  * @throws \Exception
  */
 public function readMultiTextGloss($sxeNode, $multiText, $inputSystems = null)
 {
     CodeGuard::checkTypeAndThrow($multiText, 'Api\\Model\\Languageforge\\Lexicon\\LexMultiText');
     if ($sxeNode->getName() != 'gloss') {
         throw new \Exception("'" . $sxeNode->getName() . "' is not a gloss");
     }
     $inputSystemTag = (string) $sxeNode['lang'];
     $multiText->form($inputSystemTag, (string) $sxeNode->{'text'});
     $this->project->addInputSystem($inputSystemTag);
     if (isset($inputSystems)) {
         $inputSystems->ensureValueExists($inputSystemTag);
     }
 }