code: private JsDocToken recordDescription(JsDocToken token) {
      // Find marker's description (if applicable).
      if (jsdocBuilder.shouldParseDocumentation()) {
        ExtractionInfo descriptionInfo = extractMultilineTextualBlock(token);
        token = descriptionInfo.token;
      } else {
        token = eatTokensUntilEOL(token);
      }
      return token;
    }
docs: Records a marker's description if there is one available and record it in
  the current marker.