rem: try { return getMIMEService().getFromTypeAndExtension(aMIMEType, aExtension); } catch (e) { 
add: if (aMIMEType || aExtension) { try { return getMIMEService().getFromTypeAndExtension(aMIMEType, aExtension); } catch (e) { } 
context: function getMIMEInfoForType(aMIMEType, aExtension){  try {      return getMIMEService().getFromTypeAndExtension(aMIMEType, aExtension);  }  catch (e) {  }  return null;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/f1a66b3670f78c5a5ab2e505a3c47cb5611e270b/contentAreaUtils.js/buggy/toolkit/content/contentAreaUtils.js