docs: public static void exception (Object o, TraceComponent tc, Throwable t) {
       StringBuffer sb = new StringBuffer();
       sb.append(getFullClassName(tc)+" "+getMEName(o) + " " + "Tracing exception:" + ls);
       if (t != null) {
          CharArrayWriter caw = new CharArrayWriter();
          PrintWriter pw = new PrintWriter(caw);
  
          t.printStackTrace(pw);
          pw.flush();
          sb.append(caw.toString());
  
       }
       else {
          sb.append("exception argument was null");
       }
       Tr.event(tc,sb.toString());
    }