public async getAggregate(id: string): Promise<AGGREGATE_CLASS | undefined> {
    const snapshot: { version: number, aggregateState: $AGGREGATE } | undefined = await this.getSnapshot(id);

    const version = snapshot ? snapshot.version : 0;
    const aggregateState = snapshot ? snapshot.aggregateState : {} as $AGGREGATE;

    const { events } = await this.castoreEventStore.getEvents(id, { minVersion: version || 0 });
    // cast to any because it's not typed correctly EVENT_DETAIL[] vs $EVENT_DETAIL[]
    const aggregate = this.castoreEventStore.buildAggregate(events as any, aggregateState);

    if (aggregate === undefined) {
      return undefined;
    }

    // this create an AggregateClass from the state
    return this.factory(aggregate);
  }