def inspect
      str = Inspect.dashed_line(self.class)
      headers.each do |header|
        str << header.inspect
      end
      str << Inspect.inspect_body(body)
    end
def inspect
      str = Inspect.dashed_line(self.class)
      headers.each do |header|
        str << header.inspect
      end
      str << Inspect.inspect_body(body)
    end
Get packet as a pretty formatted string.
 @return [String]