type NodeInfoLister interface {
	// List returns the list of NodeInfos.
	List() ([]*NodeInfo, error)
	// HavePodsWithAffinityList returns the list of NodeInfos of nodes with pods with affinity terms.
	HavePodsWithAffinityList() ([]*NodeInfo, error)
	// HavePodsWithRequiredAntiAffinityList returns the list of NodeInfos of nodes with pods with required anti-affinity terms.

type nodeInfoListerContract struct{}

func (c *nodeInfoListerContract) List() ([]*framework.NodeInfo, error) {
	return nil, nil
}

func (c *nodeInfoListerContract) HavePodsWithAffinityList() ([]*framework.NodeInfo, error) {
	return nil, nil
}

func (c *nodeInfoListerContract) HavePodsWithRequiredAntiAffinityList() ([]*framework.NodeInfo, error) {
	return nil, nil
}

// List returns the list of nodes in the snapshot.
func (s *Snapshot) List() ([]*framework.NodeInfo, error) {
	return s.nodeInfoList, nil
}

// HavePodsWithAffinityList returns the list of nodes with at least one pod with inter-pod affinity
func (s *Snapshot) HavePodsWithAffinityList() ([]*framework.NodeInfo, error) {
	return s.havePodsWithAffinityNodeInfoList, nil
}