return
		}
	}
	// write "PartETags"
	err = en.Append(0xa9, 0x50, 0x61, 0x72, 0x74, 0x45, 0x54, 0x61, 0x67, 0x73)
	if err != nil {
		return
	}
	if z.PartETags == nil { // allownil: if nil
		err = en.WriteNil()
		if err != nil {
			return
		}
	} else {
		err = en.WriteArrayHeader(uint32(len(z.PartETags)))
		if err != nil {
			err = msgp.WrapError(err, "PartETags")

	PartETags          []string          `json:"PartETags" msg:"PartETags,allownil"`             // Part ETags
	PartSizes          []int64           `json:"PartSizes" msg:"PartSizes"`                      // Part Sizes
	PartActualSizes    []int64           `json:"PartASizes,omitempty" msg:"PartASizes,allownil"` // Part ActualSizes (compression)