return new ActivationFrame(property, Optional.empty());
        }

        private <P> ActivationFrame nextFrame(String property, Function<P, InputLocationTracker> child) {
            @SuppressWarnings("unchecked")
            final Optional<P> parent = (Optional<P>) stk.peek().parent;
            return new ActivationFrame(property, parent.map(child));
        }

	mockCtrl := gomock.NewController(t)
	defer mockCtrl.Finish()

	var (
		mockCadvisor       = cadvisortest.NewMockInterface(mockCtrl)
		mockRuntimeCache   = new(kubecontainertest.MockRuntimeCache)
		mockPodManager     = new(kubepodtest.MockManager)
		resourceAnalyzer   = new(fakeResourceAnalyzer)
		fakeRuntimeService = critest.NewFakeRuntimeService()
		fakeImageService   = critest.NewFakeImageService()
	)

		path := req.Path
		old := req.Version
		new := r.buildListVersion[path]
		if old != new {
			changes[path] = change{path, old, new}
		}
	}
	for _, req := range newReqs {
		if gover.IsToolchain(req.Path) {
			continue
		}
		path := req.Path
		old := r.initialVersion[path]
		new := req.Version
		if old != new {
			changes[path] = change{path, old, new}
		}
	}

// sending the request, and reading the response headers and body.
//
// To create a new request with a context, use [NewRequestWithContext].
// To make a deep copy of a request with a new context, use [Request.Clone].
func (r *Request) WithContext(ctx context.Context) *Request {
	if ctx == nil {
		panic("nil context")
	}
	r2 := new(Request)
	*r2 = *r
	r2.ctx = ctx
	return r2
}

var (
	errKeepAlivesDisabled = errors.New("http: putIdleConn: keep alives disabled")
	errConnBroken         = errors.New("http: putIdleConn: connection is in bad state")
	errCloseIdle          = errors.New("http: putIdleConn: CloseIdleConnections was called")
	errTooManyIdle        = errors.New("http: putIdleConn: too many idle connections")
	errTooManyIdleHost    = errors.New("http: putIdleConn: too many idle connections for host")

  # results in "New-NetRoute : Element not found" errors). I don't know what's
  # up with that, but since it's hard to know what's the right thing to do here
  # we just try to add the route on all of the network adapters.
  Get-NetAdapter | ForEach-Object {
    $adapter_index = $_.InterfaceIndex
    New-NetRoute `
        -ErrorAction Ignore `

	const f = "append.txt"
	s := writeFile(t, f, O_CREATE|O_TRUNC|O_RDWR, "new")
	if s != "new" {
		t.Fatalf("writeFile: have %q want %q", s, "new")
	}
	s = writeFile(t, f, O_APPEND|O_RDWR, "|append")
	if s != "new|append" {
		t.Fatalf("writeFile: have %q want %q", s, "new|append")
	}
	s = writeFile(t, f, O_CREATE|O_APPEND|O_RDWR, "|append")
	if s != "new|append|append" {

}

func newPreexistingExpressions() preexistingExpressions {
	return preexistingExpressions{
		matchConditionExpressions:        sets.New[string](),
		validationExpressions:            sets.New[string](),
		validationMessageExpressions:     sets.New[string](),
		auditAnnotationValuesExpressions: sets.New[string](),
	}
}

	// At least one node was responding in previous pass or in the current pass. Semantics is as follows:
	// - if the new state is "partialDisruption" we call a user defined function that returns a new limiter to use,
	// - if the new state is "normal" we resume normal operation (go back to default limiter settings),
	// - if new state is "fullDisruption" we restore normal eviction rate,

	// fields
	_ = A{}.B
	_ = new(A).B

	_ = A{}.C
	_ = new(A).C

	_ = A{}.b
	_ = new(A).b

	_ = A{}.c
	_ = new(A).c

	_ = Inst.p
	_ = G[string]{}.p

	// methods
	_ = A{}.f
	_ = new(A).f
	_ = A{}.g
	_ = new(A).g
	_ = new(A).h

	_ = B{}.f
	_ = new(B).f

	_ = C{}.g
	_ = new(C).g
	_ = new(C).h
	_ = Inst.m