title: SuiteScript Load Saved Search And Add A Filter Throws An Error
body: <p>I am loading a saved search in a suitelet. My code is;</p>
  
  <pre><code>systemId = params.system;
  
  var itemSearchSet = search.load({
      id : 'customsearch253',
  });
  
  itemSearchSet.filters.push(search.createFilter({
      name: 'itemid',
      operator: search.Operator.ANYOF,
      values: [systemId]
  }));
  return itemSearchSet.run().getRange({"start": 0, "end": 1000});
  </code></pre>
  
  <p>This throws an error of "org.mozilla.javascript.EcmaError: TypeError: Cannot find function _clone in object and. (N/search/searchObject.js#636)"</p>
  
  <p>However if I comment out adding the new filter, it works. What am I missing?</p>