rem: displayError("unlockPref failed with error: " + e); 
add: displayError("unlockPref", e); 
context: function unlockPref(prefName) {    try {        var prefBranch = getPrefBranch();        prefBranch.unlockPref(prefName);    }    catch(e) {        displayError("unlockPref failed with error: " + e);    }}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/c5f8724fb9e6d9e43c93c47a535e31f378ad9d14/prefcalls.js/clean/extensions/pref/autoconfig/src/prefcalls.js