func (handlers *PodAdmitHandlers) AddPodAdmitHandler(a PodAdmitHandler) {
	*handlers = append(*handlers, a)
}

// PodSyncLoopHandlers maintains a list of handlers to pod sync loop.
type PodSyncLoopHandlers []PodSyncLoopHandler

// AddPodSyncLoopHandler adds the specified observer.
func (handlers *PodSyncLoopHandlers) AddPodSyncLoopHandler(a PodSyncLoopHandler) {
	*handlers = append(*handlers, a)
}

	// admission rule should be applied by a softAdmitHandler.
	softAdmitHandlers lifecycle.PodAdmitHandlers

	// the list of handlers to call during pod sync loop.
	lifecycle.PodSyncLoopHandlers

	// the list of handlers to call during pod sync.
	lifecycle.PodSyncHandlers

	// the number of allowed pods per core
	podsPerCore int