private function with a callback to another function dispatching an action is not considered in the chain

[ammarnajjar]

minimal example for the issue:

@Injectable()
export class LoadingStateEffects {
  private do = (callback: () => Action): OperatorFunction<Action, Action> => map(() => callback());

  effect1$ = createEffect(() =>
    this.actions$.pipe(ofType(action1), this.do(dispatchAction2))
  );

  effect1$ = createEffect(() =>
    this.actions$.pipe(ofType(action3), this.do(dispatchAction4))
  );
}

function dispatchAction2() {
  return action2()
}

function dispatchAction4() {
  return action4()
}

expected graph:

action1 -> action2
action3 -> action4