start := len(allMeta) - len(bts)
				bts, err = tmp.unmarshalV(1, bts)
				if err != nil {
					return msgp.WrapError(err, "Versions", za0001)
				}
				end := len(allMeta) - len(bts)
				// We reference the marshaled data, so we don't have to re-marshal.
				x.versions[za0001] = xlMetaV2ShallowVersion{
					header: tmp.header(),
					meta:   allMeta[start:end],
				}
			}
		default: