import javax.annotation.Nullable;
import java.util.Collection;
import java.util.Iterator;
import java.util.Set;
import java.util.function.Function;

/**
 * The special-cased implementation of {@link Set} that tracks all accesses to its elements.
 *
 * @param <E> the type of elements
 */
class AccessTrackingSet<E> extends ForwardingSet<E> {
    public interface Listener {
        void onAccess(@Nullable Object o);

	"os"
	"path"
	"strings"
	"sync"
)

// Cache tracks the life-cycle of Yaml based resources. It stores single-part Yaml files on disk and updates the
// files as needed, as the resources change.
type Cache struct {
	mu sync.Mutex

	discriminator int64
	resources     map[CacheKey]*resourceState
	dir           string
}

// CacheKey is a key representing a tracked Yaml based resource.
type CacheKey struct {
	group     string

   */
  HTTP_1_0("http/1.0"),

  /**
   * A plaintext framing that includes persistent connections.
   *
   * This version of OkHttp implements [RFC 7230][rfc_7230], and tracks revisions to that spec.
   *
   * [rfc_7230]: https://tools.ietf.org/html/rfc7230
   */
  HTTP_1_1("http/1.1"),

  /**
   * Chromium's binary-framed protocol that includes header compression, multiplexing multiple

// uidTrackingExpectations to remember which UID it has seen/still waiting for.
type uidSet struct {
	sync.RWMutex
	set sets.Set[string]
	key string
}

// uidTrackingExpectations tracks the UIDs of Pods the controller is waiting to
// observe tracking finalizer deletions.
type uidTrackingExpectations struct {
	store cache.Store
}

type Controller struct {
	monitor     Monitor
	configStore model.ConfigStore
	hasSynced   func() bool

	// If meshConfig.DiscoverySelectors are specified, the namespacesFilter tracks the namespaces this controller watches.
	namespacesFilter func(obj interface{}) bool
}

// NewController return an implementation of ConfigStoreController

	Server *DiscoveryServer

	// TODO: track last N Nacks and connection events, with 'version' based on timestamp.
	// On new connect, use version to send recent events since last update.
}

func NewStatusGen(s *DiscoveryServer) *StatusGen {
	return &StatusGen{
		Server: s,
	}
}

// Generate XDS responses about internal events:
// - connection status
// - NACKs
// We can also expose ACKS.

)

// reconciler is responsible for transforming current EndpointSlice state into
// desired state
type reconciler struct {
	client clientset.Interface

	// endpointSliceTracker tracks the list of EndpointSlices and associated
	// resource versions expected for each Endpoints resource. It can help
	// determine if a cached EndpointSlice is out of date.
	endpointSliceTracker *endpointsliceutil.EndpointSliceTracker

     *
     * <p>To calculate the final value of this object any source for the value is queried and the result used as the final value for this object. The source is discarded
     * so that this object no longer tracks the value of the source.</p>
     *
     * <p>Subsequent attempts to change the value of this object or to replace the source from which the value is derived will fail with an exception.
     *

		go nc.legacyIPAM.Run(ctx)
	} else {
		go nc.cidrAllocator.Run(ctx)
	}

	<-ctx.Done()
}

// RunWithMetrics is a wrapper for Run that also tracks starting and stopping of the nodeipam controller with additional metric
func (nc *Controller) RunWithMetrics(ctx context.Context, controllerManagerMetrics *controllersmetrics.ControllerManagerMetrics) {

	for _, rr := range r {
		a = append(a, rr.Resource)
	}
	return a
}

// WatchedResource tracks an active DiscoveryRequest subscription.
type WatchedResource struct {
	// TypeUrl is copied from the DiscoveryRequest.TypeUrl that initiated watching this resource.
	// nolint
	TypeUrl string

	// ResourceNames tracks the list of resources that are actively watched.