diff --git a/sandbox/neigh_windows.go b/sandbox/neigh_windows.go
new file mode 100644
index 0000000..58b3058
--- /dev/null
+++ b/sandbox/neigh_windows.go
@@ -0,0 +1,4 @@
+package sandbox
+
+// NeighOption is a function option type to set neighbor options
+type NeighOption func()