From 7b03f8d7d9aedf1e839ffc592e2d1943c2f418b6 Mon Sep 17 00:00:00 2001
From: Doug Fawley <dfawley@google.com>
Date: Fri, 6 Oct 2023 14:33:53 -0700
Subject: [PATCH] codes: update docstring to indicate expected usage

---
 codes/codes.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/codes/codes.go b/codes/codes.go
index 11b106182db2..7c4b2239917a 100644
--- a/codes/codes.go
+++ b/codes/codes.go
@@ -25,7 +25,13 @@ import (
 	"strconv"
 )
 
-// A Code is an unsigned 32-bit error code as defined in the gRPC spec.
+// A Code is a status code according to the gRPC spec:
+//
+// https://github.com/grpc/grpc/blob/master/doc/statuscodes.md
+//
+// Only the codes defined as consts in this package are valid codes. Do not use
+// other code values.  Behavior and interopability are implementation-specific
+// and not guaranteed.
 type Code uint32
 
 const (