rem: return false; 
add: return 0; 
context: function testMaxLength(sHistory){  if (!sHistory) {    alert("Didn't get SessionHistory object");    return false;    }  var maxLen = sHistory.maxLength;  // GetMaxLength  return maxLen;}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/1d1d158fd237407a6cb66405546254fe3dbc5465/nsISHistoryTestLib.js/clean/embedding/qa/jstests/sHistory/nsISHistoryTestLib.js