err = en.Append(0xa2, 0x6e, 0x76)
		if err != nil {
			return
		}
		err = en.WriteInt(za0002.NumVersions)
		if err != nil {
			err = msgp.WrapError(err, "Tiers", za0001, "NumVersions")
			return
		}
		// write "no"
		err = en.Append(0xa2, 0x6e, 0x6f)
		if err != nil {
			return
		}
		err = en.WriteInt(za0002.NumObjects)
		if err != nil {
			err = msgp.WrapError(err, "Tiers", za0001, "NumObjects")

		err = en.WriteNil()
		if err != nil {
			return
		}
	} else {
		err = en.WriteBytes(z.Data)
		if err != nil {
			err = msgp.WrapError(err, "Data")
			return
		}
	}
	err = en.WriteInt(z.NumVersions)
	if err != nil {
		err = msgp.WrapError(err, "NumVersions")
		return
	}
	err = en.WriteTime(z.SuccessorModTime)
	if err != nil {
		err = msgp.WrapError(err, "SuccessorModTime")