AB4227 - Moved Persistence Repository implementations

src/Umbraco.Infrastructure/Persistence/Repositories/Implement/LanguageRepositoryExtensions.cs

@@ -0,0 +1,11 @@
+namespace Umbraco.Core.Persistence.Repositories.Implement
+{
+    internal static class LanguageRepositoryExtensions
+    {
+        public static bool IsDefault(this ILanguageRepository repo, string culture)
+        {
+            if (culture == null || culture == "*") return false;
+            return repo.GetDefaultIsoCode().InvariantEquals(culture);
+        }
+    }
+}