in src/managers/epic-manager.ts [39:47]
public fault(index: number): void {
for (const i of this.getFaultedChain(index)) {
const sub = this.subscriptions[i];
if (sub.state === State.Active && !sub.subscription.closed) {
sub.state = State.Faulted;
sub.subscription.unsubscribe();
}
}
}