A selected document absent from the evaluated snapshot. Absence alone does not prove deletion. When present, availability carries the completed check. This evidence is derived for the evaluation and is never persisted.
availability
Optional
Completed availability evidence. Failed or unsupported checks yield unreadable. Omitted when the caller supplied only a content snapshot.
unreadable
The declared field title, when available.
A selected document absent from the evaluated snapshot. Absence alone does not prove deletion. When present,
availabilitycarries the completed check. This evidence is derived for the evaluation and is never persisted.