code: public String create(Request request, Response response, Long duration)
  	{
  		return createStringBuilder(request, response, duration).toString();
  	}
docs: Creates a string suitable for logging output.
  
  @param request a RestExpress Request instance.
  @param response a RestExpress Response instance.
  @param duration the duration of the request, in milliseconds.
  @return a String as described above.