rem: return false; 
add: return 0; 
context: function testHistoryCount(sHistory){  if (!sHistory) {    alert("Didn't get SessionHistory object");    return false;    }  var cnt = sHistory.count;     // GetCount()   return cnt; }
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/e0e3a32c7d2e7f0e0d5fed54932a27821b36aa27/nsISHistoryTestLib.js/buggy/embedding/qa/jstests/sHistory/nsISHistoryTestLib.js