Linux Mac OSX Windows 
 Extending nsIX509Cert
 
 TODO: nsIX509Cert3 should be derived from nsIX509Cert2
       (and nsIX509Cert2 derived from nsIX509Cert)
[scriptable, uuid(402aee39-653c-403f-8be1-6d1824223bf9)]
interface nsIX509Cert3 : nsISupports

Methods

  Async version of nsIX509Cert::getUsagesArray()

  Will not block, will request results asynchronously,
  availability of results will be notified.
void requestUsagesArrayAsync(in nsICertVerificationListener cvl)