Get events by creation number
Event types are globally identifiable by an account `address` and monotonically increasing `creation_number`, one per event type emitted to the given account. This API returns events corresponding to that that event type.
Get events by event handle
This API uses the given account `address`, `eventHandle`, and `fieldName` to build a key that can globally identify an event types. It then uses this key to return events emitted to the given account matching that event type.