public PgpKeyId(long keyId) {
        asLong = keyId;
        asHex = toHex(keyId);
    }

    public PgpKeyId(PGPPublicKey keyId) {
        this(keyId.getKeyID());
    }

    public PgpKeyId(PGPSignature signature) {
        this(signature.getKeyID());
    }

    public PgpKeyId(String keyId) {
        asLong = toLong(keyId);
        asHex = toHex(asLong);
    }

    @Override

    private static final SecureRandom RANDOM = new SecureRandom();

    private static final String BASE = StringUtil.toHex(getAddress()) + StringUtil.toHex(System.identityHashCode(RANDOM));

    /**
     * UUIDを作成します。
     *
     * @return UUIDの文字列
     */
    public static String create() {

     */
    @Test
    public void testToHex() throws Exception {
        assertEquals("010203", StringUtil.toHex(new byte[] { 1, 2, 3 }));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testToHex2() throws Exception {
        assertEquals("0001", StringUtil.toHex(1));
    }

    /**
     * @throws Exception
     */
    @Test

    }

    /**
     * 16進数の文字列に変換します。
     *
     * @param bytes
     *            バイトの配列
     * @return 16進数の文字列
     */
    public static String toHex(final byte[] bytes) {
        if (bytes == null) {
            return "";
        }
        final StringBuilder sb = new StringBuilder(bytes.length * 2);
        for (final byte b : bytes) {

  printer << " : \"";
  if (limit && limit.value() < bytes_str.size()) {
    printer << "__elided__";
  } else {
    printer << "0x" << llvm::toHex(bytes_str);
  }
  printer << "\"";
}

//===----------------------------------------------------------------------===//
// BitcastOp