type google.golang.org/grpc/internal/grpcsync.Subscriber

5 uses

	google.golang.org/grpc/internal/grpcsync (current package)
		pubsub.go#L29: type Subscriber interface {
		pubsub.go#L52: 	subscribers map[Subscriber]bool
		pubsub.go#L60: 		subscribers: map[Subscriber]bool{},
		pubsub.go#L72: func (ps *PubSub) Subscribe(sub Subscriber) (cancel func()) {

	google.golang.org/grpc
		clientconn.go#L729: 	internal.SubscribeToConnectivityStateChanges = func(cc *ClientConn, s grpcsync.Subscriber) func() {