google.golang.org/grpc/health/grpc_health_v1.HealthClient.List (method)

one use

	google.golang.org/grpc/health/grpc_health_v1 (current package)
		health_grpc.pb.go#L71: 	List(ctx context.Context, in *HealthListRequest, opts ...grpc.CallOption) (*HealthListResponse, error)