func (R1) m(R[int]) {}

// Test case from issue.

func _() {
	r := newTestRules()
	NewSet(r)
	r2 := newTestRules2()
	NewSet(r2)
}

type Set[T any] struct {
	rules Rules[T]
}

func NewSet[T any](rules Rules[T]) Set[T] {
	return Set[T]{
		rules: rules,
	}
}

func (s Set[T]) Copy() Set[T] {
	return NewSet(s.rules)
}

type Rules[T any] interface {
	Hash(T) int
	Equivalent(T, T) bool

		{filter: "", labels: NewSet(Postsubmit), expected: true},
		{filter: "", labels: NewSet(Postsubmit, CustomSetup), expected: true},
		{filter: "$requires.kube", labels: NewSet(Postsubmit, CustomSetup), err: true},
		{filter: "zoo", labels: NewSet(Postsubmit, CustomSetup), expected: true},
		{filter: "postsubmit", labels: NewSet(Postsubmit), expected: true},
		{filter: "postsubmit", labels: NewSet(CustomSetup), expected: false},

	fields := map[fieldpath.APIVersion]*fieldpath.Set{
		"autoscaling/v1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"autoscaling/v2": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"autoscaling/v2beta1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"autoscaling/v2beta2": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
	}

	return fields
}

	if ok {
		if vs == nil {
			panic(fmt.Sprintf("Found unexpected nil manager which should never happen: %s", manager))
		}
		newSet := vs.Set().Difference(f.stripSet)
		if newSet.Empty() {
			delete(managed, manager)
		} else {
			managed[manager] = fieldpath.NewVersionedSet(newSet, vs.APIVersion(), vs.Applied())
		}
	}

	fields := map[fieldpath.APIVersion]*fieldpath.Set{
		"extensions/v1beta1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"networking.k8s.io/v1beta1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"networking.k8s.io/v1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
	}

	return fields
}

	fields := map[fieldpath.APIVersion]*fieldpath.Set{
		"admissionregistration.k8s.io/v1alpha1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"admissionregistration.k8s.io/v1beta1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"admissionregistration.k8s.io/v1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
	}

	return fields
}

			return false
		}
	}
	return true
}

type Set[T comparable] map[T]struct{}

func NewSet[T comparable](items ...T) Set[T] {
	return nil
}

func (s Set[T]) Equals(other Set[T]) bool {
	return EqualMap(s, other)
}

func main() {
	NewSet[Addr](Addr{0, 0, nil})

		"flowcontrol.apiserver.k8s.io/v1beta1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"flowcontrol.apiserver.k8s.io/v1beta2": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"flowcontrol.apiserver.k8s.io/v1beta3": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
		"flowcontrol.apiserver.k8s.io/v1": fieldpath.NewSet(
			fieldpath.MakePathOrDie("status"),
		),
	}

      labels:
        app: my-new-label # allowed: update-label
    spec:
      containers:
      - name: my-c
        image: my-image-new # NOT allowed: update image
`),
			expectConflictSet: fieldpath.NewSet(
				fieldpath.MakePathOrDie("metadata", "labels", "app"),
				fieldpath.MakePathOrDie("spec", "replicas"),
				fieldpath.MakePathOrDie("spec", "template", "spec", "containers", fieldpath.KeyByFields("name", "my-c"), "image"),

			continue
		}

		if _, ok := scaleFields[manager]; !ok {
			// "Steal" the replicas path from the main resource entry
			newSet := versionedSet.Set().Difference(fieldpath.NewSet(path))

			if !newSet.Empty() {
				newVersionedSet := fieldpath.NewVersionedSet(
					newSet,
					versionedSet.APIVersion(),
					versionedSet.Applied(),
				)
				f[manager] = newVersionedSet