Read deletedAt off any value a gateway or Personal Server might hand
back (a record, an error body, null, an array, ...). Returns null
unless it is a string, so every DataPointDeletedError carries the same
deletedAt semantics regardless of which read path raised it.
Read
deletedAtoff any value a gateway or Personal Server might hand back (a record, an error body,null, an array, ...). Returnsnullunless it is a string, so everyDataPointDeletedErrorcarries the samedeletedAtsemantics regardless of which read path raised it.