updateLastSavedEventId
open suspend override fun updateLastSavedEventId(eventId: String): <Error class: unknown class><<Error class: unknown class>, Unit>
Updates the last saved event ID.
Return
An Either object representing the result of the operation. The Either object contains either a StorageFailure if the operation fails, or Unit if the operation succeeds.
Parameters
eventId
The ID of the event to be set as the last saved event ID.