code: public static void exception (Object o, TraceComponent tc, Exception e) {
      exception(o, tc, (Throwable)e);
    }
docs: If event level trace is enabled then trace an Exception and its associated
  stack trace and any linked exceptions.
  <p>
  @param o handle of the object making the trace call
  @param tc the non-null <code>TraceComponent</code> the event is associated
  with.
  @param e the Exception object to be traced