}

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    public Date getExpires() {
        if (getExpiredTime() == null) {
            return null;
        }
        return new Date(getExpiredTime());
    }

    public void setExpires(final Date date) {
        setExpiredTime(date != null ? date.getTime() : null);
    }

    @Override

		},
	}

	// Run tests
	for _, tt := range testCases {
		t.Run(tt.name, func(t *testing.T) {
			if tt.expired {
				// Expired already.
				pp.SetExpires(UTCNow().AddDate(0, 0, -10))
			} else {
				// Expires in 10 days.
				pp.SetExpires(UTCNow().AddDate(0, 0, 10))
			}

			tt.fv.Set("Policy", base64.StdEncoding.EncodeToString([]byte(pp.String())))