ToLowerCase( nsACString& aCString )
ToLowerCase( nsASingleFragmentCString& aCString )
ToLowerCase( nsACString& aCString )  {    nsACString::iterator fromBegin, fromEnd;    ConvertToLowerCase converter;    copy_string(aCString.BeginWriting(fromBegin), aCString.EndWriting(fromEnd), converter);  }