// clone should make shallow copies for members (e.g., slices or maps) that are not
	// impacted by PreFilter's optional AddPod/RemovePod methods.
	Clone() StateData
}

// StateKey is the type of keys stored in CycleState.
type StateKey string

// CycleState provides a mechanism for plugins to store and retrieve arbitrary data.
// StateData stored by one plugin can be read, altered, or deleted by another plugin.

	if pod == nil {
		return framework.NewStatus(framework.Error, "pod cannot be nil")
	}
	if pod.Name == "my-test-pod" {
		state.Write(framework.StateKey(pod.Name), &stateData{data: "never bind"})
	}
	return nil
}

// Unreserve is the function invoked by the framework when any error happens
// during "reserve" extension point or later.

	"k8s.io/kubernetes/pkg/scheduler/framework/plugins/feature"
	"k8s.io/kubernetes/pkg/scheduler/framework/plugins/helper"
	"k8s.io/kubernetes/pkg/scheduler/framework/plugins/names"
)

const (
	stateKey framework.StateKey = Name

	maxUtilization = 100
)

// the state is initialized in PreFilter phase. because we save the pointer in
// framework.CycleState, in the later phases we don't need to call Write method

import (
	"fmt"
	"testing"
)

type fakeData struct {
	data string
}

func (f *fakeData) Clone() StateData {
	copy := &fakeData{
		data: f.data,
	}
	return copy
}

var key StateKey = "fakedata_key"

// createCycleStateWithFakeData creates *CycleState with fakeData.
// The given data is used in stored fakeData.
func createCycleStateWithFakeData(data string, recordPluginMetrics bool) *CycleState {

var _ framework.EnqueueExtensions = &VolumeZone{}

const (
	// Name is the name of the plugin used in the plugin registry and configurations.
	Name = names.VolumeZone

	preFilterStateKey framework.StateKey = "PreFilter" + Name

	// ErrReasonConflict is used for NoVolumeZoneConflict predicate error.
	ErrReasonConflict = "node(s) had no available volume zone"
)

// pvTopology holds the value of a pv's topologyLabel

	"k8s.io/kubernetes/pkg/scheduler/util/assumecache"
	"k8s.io/utils/ptr"
)

const (
	// Name is the name of the plugin used in Registry and configurations.
	Name = names.DynamicResources

	stateKey framework.StateKey = Name

	// generatedFromIndex is the lookup name for the index function
	// which indexes by other resource which generated the parameters object.
	generatedFromIndex = "generated-from-index"
)

// activated (i.e., moved to activeQ) in two phases:
// - end of a scheduling cycle if it succeeds (will be cleared from `PodsToActivate` if activated)
// - end of a binding cycle if it succeeds
var PodsToActivateKey StateKey = "kubernetes.io/pods-to-activate"

// PodsToActivate stores pods to be activated.
type PodsToActivate struct {
	sync.Mutex
	// Map is keyed with namespaced pod name, and valued with the pod.