)

// Define experimental features here.
var (
	// FilterGatewayClusterConfig controls if a subset of clusters(only those required) should be pushed to gateways
	FilterGatewayClusterConfig = env.Register("PILOT_FILTER_GATEWAY_CLUSTER_CONFIG", false,
		"If enabled, Pilot will send only clusters that referenced in gateway virtual services attached to gateway").Get()

	SendUnhealthyEndpoints = atomic.NewBool(env.Register(

	delegates map[ConfigKey][]ConfigKey

	// This contains destination hosts of virtual services, keyed by gateway's namespace/name,
	// only used when PILOT_FILTER_GATEWAY_CLUSTER_CONFIG is enabled
	destinationsByGateway map[string]sets.String

	// Map of VS hostname -> referenced hostnames
	referencedDestinations map[string]sets.String
}