Inconsistant description of TransferError::TooOld error

[Maxim]

The spec text says:

The created_at_time parameter indicates the time (as nanoseconds since the UNIX epoch in the UTC timezone) at which the client constructed the transaction. The ledger MAY reject transactions that have created_at_time argument too far in the past or the future, returning variant { TooOld = record { allowed_window_nanos = ... } } and variant { CreatedInFuture } errors correspondingly.

Note the variant { TooOld = record { allowed_window_nanos = ... } } part. The error type description does not have any fields for this error variant:

type TransferError = variant {
    ...
    TooOld;
}

Same goes for did file.

Which variant is the correct one?