Optionalspec: Optional ReadonlybatchSize?: numberConsecutive feed items delivered per invocation, as event.items in feed order; one when unset.
The last batch of a read is short rather than waiting for the feed to fill it.
Optional Readonlyfeed?: Ref<Feed & OfKind<Object> & Unknown>Readonlykind: "feed"
Checks if a trigger having this spec can be manually invoked (a
directortimertrigger).