diff --git a/docs/demo/src/WTA.Shared/Attributes/OneToManyAttribute.cs b/docs/demo/src/WTA.Shared/Attributes/OneToManyAttribute.cs
new file mode 100644
index 00000000..5197be21
--- /dev/null
+++ b/docs/demo/src/WTA.Shared/Attributes/OneToManyAttribute.cs
@@ -0,0 +1,11 @@
+namespace WTA.Shared.Attributes;
+
+public class OneToManyAttribute<TEntity>
+{
+    public Type Type { get; set; } = null;
+    public OneToManyAttribute<TEntity>(string property)
+    {
+        this.Type=typeof(TEntity);
+        this.Property=Property;
+    }
+}