# File lib/gpgme.rb, line 1390
    def inspect
      sprintf("#<#{self.class} %s %4d%c/%s %s trust=%s, capability=%s>",
              secret? ? 'ssc' : 'sub',
              length,
              pubkey_algo_letter,
              (@fingerprint || @keyid)[-8 .. -1],
              timestamp.strftime('%Y-%m-%d'),
              trust.inspect,
              capability.inspect)
    end