docs: function setHeaders (options) {
    if (!options.headers) {
      options.headers = {};
    }
  
    if (options.bugReport) {
      options.headers[ 'Report-Msgid-Bugs-To' ] = options.bugReport;
    }
  
    if (options.lastTranslator) {
      options.headers[ 'Last-Translator' ] = options.lastTranslator;
    }
  
    if (options.team) {
      options.headers[ 'Language-Team' ] = options.team;
    }
  
    if (options.defaultHeaders && !options.headers.hasOwnProperty('X-Poedit-KeywordsList')) {
      options.headers[ 'X-Poedit-KeywordsList' ] = keywordsListStrings(options.gettextFunctions).join(';');
    }
  
    return options;
  }