# File lib/yard/logging.rb, line 126
    def backtrace(exc, level_meth = :error)
      return unless show_backtraces
      send(level_meth, "#{exc.class.class_name}: #{exc.message}")
      send(level_meth, "Stack trace:" +
        exc.backtrace[0..5].map {|x| "\n\t#{x}" }.join + "\n")
    end