rem: } catch(ex) {} 
add: } catch(ex) { do_throw("getChildCount failed: " + ex); } 
context: function getChildCount(aFolderId) {  var cc = -1;  try {    var options = histsvc.getNewQueryOptions();    var query = histsvc.getNewQuery();    query.setFolders([aFolderId], 1);    var result = histsvc.executeQuery(query, options);    var rootNode = result.root;    rootNode.containerOpen = true;    cc = rootNode.childCount;    rootNode.containerOpen = false;  } catch(ex) {}  return cc;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/7339bc5d284bab0169c4cd120d00ad0d1f0615df/test_bookmarks.js/clean/toolkit/components/places/tests/bookmarks/test_bookmarks.js