type keepFileErr struct {
	error
}

func extractInspectV2(pks [][]byte, r io.Reader, extractDir string) error {
	sr, err := estream.NewReader(r)
	if err != nil {
		return err
	}
	for _, pk := range pks {
		privKey, err := bytesToPrivateKey(pk)
		if err != nil {
			return fmt.Errorf("decoding key returned: %w", err)
		}
		sr.SetPrivateKey(privKey)
	}
	sr.ReturnNonDecryptable(true)

	// Debug corrupted streams.
	if false {

],["LU",20,"F03A13"],["LV",21,"U04A13"],["MC",27,"F05F05A11F02"],["MD",24,"U02A18"],["ME",22,"F03F13F02"],["MK",19,"F03A10F02"],["MR",27,"F05F05F11F02"],["MT",31,"U04F05A18"],["MU",30,"U04F02F02F12F03U03"],["NL",18,"U04F10"],["NO",15,"F04F06F01"],["PK",24,"U04A16"],["PL",28,"F08F16"],["PS",29,"U04A21"],["PT",25,"F04F04F11F02"],["RO",24,"U04A16"],["RS",22,"F03F13F02"],["SA",24,"F02A18"],["SE",24,"F03F16F01"],["SI",19,"F05F08F02"],["SK",24,"F04F06F10"],["SM",27,"U01F05F05A12"],["ST",25,"F08F11F02"...