From 572b715b374a16e3135fadeb814178720b748e18 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michal=20Altair=20Val=C3=A1=C5=A1ek?= <github@rider.cz>
Date: Wed, 21 Aug 2024 23:46:41 +0200
Subject: [PATCH] Add missing MergeAttribute method to sample.

The sample contains call to undefined method MergeAttribute and does not work. I added the method.
---
 README.MD | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README.MD b/README.MD
index 6703b99..0845cf2 100644
--- a/README.MD
+++ b/README.MD
@@ -122,6 +122,16 @@ public class ClassicMovieAttribute : ValidationAttribute, IClientModelValidator
         var year = _year.ToString(CultureInfo.InvariantCulture);
         MergeAttribute(context.Attributes, "data-val-classicmovie-year", year);
     }
+
+    private static bool MergeAttribute(IDictionary<string, string> attributes, string key, string value) {
+        if (attributes.ContainsKey(key)) {
+            return false;
+        }
+
+        attributes.Add(key, value);
+        return true;
+    }
+
 }
 ```