2853: Add comment.

diff --git a/sdk/go/keepclient/root_sorter_test.go b/sdk/go/keepclient/root_sorter_test.go
index 0d45e908ed3a3df2939c539299570e982a728892..7fe6a70fa847c4b02e26bf314efa426690682cd0 100644 (file)
--- a/sdk/go/keepclient/root_sorter_test.go
+++ b/sdk/go/keepclient/root_sorter_test.go
@@ -43,6 +43,8 @@ func (*RootSorterSuite) JustOneRoot(c *C) {
 
 func (*RootSorterSuite) ReferenceSet(c *C) {
        fakeroots := FakeServiceRoots(16)
+       // These reference probe orders are explained further in
+       // ../../python/arvados/keep.py:
        expected_orders := []string{
                "3eab2d5fc9681074",
                "097dba52e648f1c3",