# File lib/mail/body.rb, line 129
    def encoded
      if multipart?
        self.sort_parts!
        encoded_parts = parts.map { |p| p.encoded }
        ([preamble] + encoded_parts).join(crlf_boundary) + end_boundary + epilogue.to_s
      else
        raw_source.to_crlf
      end
    end