rem: return false; 
add: return null; 
context: function  testHistoryEntryFrame(nextHE, index){  if (!nextHE) {    alert("Didn't get history entry object");    return false;    }  // Get SubFrame Status for the nextEntry   frameStatus = entry.isSubFrame;      return frameStatus;}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/1d1d158fd237407a6cb66405546254fe3dbc5465/nsISHistoryTestLib.js/clean/embedding/qa/jstests/sHistory/nsISHistoryTestLib.js