diff --git a/documentation/topics/actions/generic-actions.md b/documentation/topics/actions/generic-actions.md
index 899fe4fec..b9a96b9b2 100644
--- a/documentation/topics/actions/generic-actions.md
+++ b/documentation/topics/actions/generic-actions.md
@@ -81,6 +81,17 @@ end
 >   run # ...
 > end
 > ```
+>
+> For returning many instances of the resource, you can set your action's return type to
+> `{:array, :struct}` and set the `items` constraint to the name of your resource.
+>
+> ```elixir
+  action :list_resources, {:array, :struct} do
+    constraints items: [instance_of: __MODULE__]
+
+    run # ...
+  end
+> ```
 
 ## Calling Generic Actions