defaultPlugins.Filter = mergePluginSet(logger, defaultPlugins.Filter, customPlugins.Filter)
	defaultPlugins.PostFilter = mergePluginSet(logger, defaultPlugins.PostFilter, customPlugins.PostFilter)
	defaultPlugins.PreScore = mergePluginSet(logger, defaultPlugins.PreScore, customPlugins.PreScore)
	defaultPlugins.Score = mergePluginSet(logger, defaultPlugins.Score, customPlugins.Score)

	// other postFilter plugins like preemption would not change anything.
	// See the comment on PostFilter interface for more details about how PostFilter should handle this status.
	// Plugins should return Unschedulable if it is possible that the pod can get scheduled
	// after running other postFilter plugins.
	// The accompanying status message should explain why the pod is unschedulable.

				initialObjects = testCtx.updateAPIServer(t, initialObjects, tc.prepare.postfilter)
				result, status := testCtx.p.PostFilter(testCtx.ctx, testCtx.state, tc.pod, nil /* filteredNodeStatusMap not used by plugin */)
				t.Run("postfilter", func(t *testing.T) {
					assert.Equal(t, tc.want.postFilterResult, result)
					testCtx.verify(t, tc.want.postfilter, initialObjects, nil, status)
				})
			}
		})
	}
}

	PreFilterExtensionAddPod    = "PreFilterExtensionAddPod"
	PreFilterExtensionRemovePod = "PreFilterExtensionRemovePod"
	PostFilter                  = "PostFilter"
	PreScore                    = "PreScore"
	Score                       = "Score"
	ScoreExtensionNormalize     = "ScoreExtensionNormalize"
	PreBind                     = "PreBind"
	Bind                        = "Bind"
	PostBind                    = "PostBind"

		args:      *args,
		podLister: fh.SharedInformerFactory().Core().V1().Pods().Lister(),
		pdbLister: getPDBLister(fh.SharedInformerFactory()),
	}
	return &pl, nil
}

// PostFilter invoked at the postFilter extension point.
func (pl *DefaultPreemption) PostFilter(ctx context.Context, state *framework.CycleState, pod *v1.Pod, m framework.NodeToStatusMap) (*framework.PostFilterResult, *framework.Status) {
	defer func() {

			"preEnqueue": profile.Plugins.PreEnqueue,
			"queueSort":  profile.Plugins.QueueSort,
			"preFilter":  profile.Plugins.PreFilter,
			"filter":     profile.Plugins.Filter,
			"postFilter": profile.Plugins.PostFilter,
			"preScore":   profile.Plugins.PreScore,
			"score":      profile.Plugins.Score,
			"reserve":    profile.Plugins.Reserve,
			"permit":     profile.Plugins.Permit,

				},
				// PostFilterMsg will be included.
				PostFilterMsg: "Error running PostFilter plugin FailedPostFilter",
			},
			wantReasonMsg: "0/3 nodes are available: Node(s) failed PreFilter plugin FalsePreFilter. Error running PostFilter plugin FailedPostFilter",
		},
		{
			name:        "nodes failed one Filter plugin with an empty PostFilterMsg",
			numAllNodes: 3,

	if !state.ShouldRecordPluginMetrics() {
		return pl.PostFilter(ctx, state, pod, filteredNodeStatusMap)
	}
	startTime := time.Now()
	r, s := pl.PostFilter(ctx, state, pod, filteredNodeStatusMap)
	f.metricsRecorder.ObservePluginDurationAsync(metrics.PostFilter, pl.Name(), s.Code().String(), metrics.SinceInSeconds(startTime))
	return r, s
}

			{Name: names.NodeVolumeLimits},
			{Name: names.VolumeBinding},
			{Name: names.VolumeZone},
			{Name: names.PodTopologySpread},
			{Name: names.InterPodAffinity},
		},
	},
	PostFilter: config.PluginSet{
		Enabled: []config.Plugin{
			{Name: names.DefaultPreemption},
		},
	},
	PreScore: config.PluginSet{
		Enabled: []config.Plugin{
			{Name: names.TaintToleration},

	PreFilter PluginSet

	// Filter is a list of plugins that should be invoked when filtering out nodes that cannot run the Pod.
	Filter PluginSet

	// PostFilter is a list of plugins that are invoked after filtering phase, but only when no feasible nodes were found for the pod.
	PostFilter PluginSet

	// PreScore is a list of plugins that are invoked before scoring.
	PreScore PluginSet