expiry
A value of Expiry.Unknown means the expiry is unknown because the withExpiry argument was false when getting the document.
If the expiry is known, it will be either Expiry.None or Expiry.Absolute.
A value of Expiry.Unknown means the expiry is unknown because the withExpiry argument was false when getting the document.
If the expiry is known, it will be either Expiry.None or Expiry.Absolute.