continue;
                }

                if (sideEffect instanceof CompositeSideEffect) {
                    CompositeSideEffect<? super T> compositeSideEffect = Cast.uncheckedNonnullCast(sideEffect);
                    flatSideEffects.addAll(compositeSideEffect.sideEffects);
                } else {
                    flatSideEffects.add(sideEffect);
                }
            }