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-rw-r--r--guide/ssl_auth.md3
1 files changed, 2 insertions, 1 deletions
diff --git a/guide/ssl_auth.md b/guide/ssl_auth.md
index 6d521b9..f9a4812 100644
--- a/guide/ssl_auth.md
+++ b/guide/ssl_auth.md
@@ -100,7 +100,8 @@ certificate, you can again use the `public_key:pkix_issuer_id/2` to
extract the `IssuerID` value.
The following function returns the `IssuerID` or `false` if no client
-certificate was found.
+certificate was found. This snippet is intended to be used from your
+protocol code.
``` erlang
socket_to_issuer_id(Socket) ->