*
   * <p>For streams with defined encounter order (as defined in the Ordering section of the {@link
   * java.util.stream} Javadoc), that order is preserved, but entries are <a
   * href="ImmutableMultimap.html#iteration">grouped by key</a>.
   *
   * <p>Example:
   *
   * <pre>{@code
   * static final Multimap<Character, String> FIRST_LETTER_MULTIMAP =
   *     Stream.of("banana", "apple", "carrot", "asparagus", "cherry")

// clusters when a push for the specific cluster is needed.
type EndpointShards struct {
	// mutex protecting below map.
	sync.RWMutex

	// Shards is used to track the shards. EDS updates are grouped by shard.
	// Current implementation uses the registry name as key - in multicluster this is the
	// name of the k8s cluster, derived from the config (secret).
	Shards map[ShardKey][]*IstioEndpoint

   *
   * <p>For streams with defined encounter order (as defined in the Ordering section of the {@link
   * java.util.stream} Javadoc), that order is preserved, but entries are <a
   * href="ImmutableMultimap.html#iteration">grouped by key</a>.
   *
   * <p>Example:
   *
   * <pre>{@code
   * static final Multimap<Character, String> FIRST_LETTER_MULTIMAP =
   *     Stream.of("banana", "apple", "carrot", "asparagus", "cherry")

## Request, System and Cluster Metrics

At a high level metrics are grouped into three categories, listed in the following sub-sections. The path in each of the tables is relative to the top-level endpoint.

### Request metrics 

These are metrics about requests served by the (current) node.

		// minor version should allow them all to be fixed. In the meantime, this field
		// explains the behavior reason for a particular failure.
		fixme string
	}

	// Test cases are grouped by the kind of the CBOR data item being decoded, as enumerated in
	// https://www.rfc-editor.org/rfc/rfc8949.html#section-2.
	group := func(t *testing.T, name string, tests []test) {
		t.Run(name, func(t *testing.T) {

	// Status returns the status of the runtime. An error is returned if the Status
	// function itself fails, nil otherwise.
	Status(ctx context.Context) (*RuntimeStatus, error)
	// GetPods returns a list of containers grouped by pods. The boolean parameter
	// specifies whether the runtime returns all containers including those already
	// exited and dead containers (used for garbage collection).
	GetPods(ctx context.Context, all bool) ([]*Pod, error)

	}()

	// Keep track of bounds for later validation.
	var bound Type
	for i, f := range list {
		// Optimization: Re-use the previous type bound if it hasn't changed.
		// This also preserves the grouped output of type parameter lists
		// when printing type strings.
		if i == 0 || f.Type != list[i-1].Type {
			bound = check.bound(f.Type)
			if isTypeParam(bound) {

	// listKind is the serialized kind of the list for this resource. Defaults to "`kind`List".
	// +optional
	ListKind string `json:"listKind,omitempty" protobuf:"bytes,5,opt,name=listKind"`
	// categories is a list of grouped resources this custom resource belongs to (e.g. 'all').
	// This is published in API discovery documents, and used by clients to support invocations like
	// `kubectl get all`.
	// +optional
	// +listType=atomic

func (x stackProfile) Stack(i int) []uintptr { return x[i] }
func (x stackProfile) Label(i int) *labelMap { return nil }

// A countProfile is a set of stack traces to be printed as counts
// grouped by stack trace. There are multiple implementations:
// all that matters is that we can find out how many traces there are
// and obtain each trace in turn.
type countProfile interface {
	Len() int
	Stack(i int) []uintptr