code: function setLast(method, arg, options) {
      last = {
        method: method,
        arg: arg,
        options: options,
        callback: options.callback,
        page: options.page || 1
      };
  
      options.method = method;
  
      if (caching) {
        var last_request = JSON.parse(sessionStorage.getItem('twitterlib.last_request') || '{}');
        if (last.method != last_request.method || last.arg != last_request.arg) {
          clearCache();
          sessionStorage.setItem('twitterlib.last_request', JSON.stringify(last));
        }
      }
    }
docs: save the last type of request, with all their options - so we can hit twitterlib.next() and it'll automagically prepopulate the filters, etc.