> For the complete documentation index, see [llms.txt](https://xavierarpa.gitbook.io/uniflux/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xavierarpa.gitbook.io/uniflux/components/extension-key.md).

# Extension Key

The Extension Key is a name invented to refer to the class that handles the extensions of the data type that we want to use as a key, things like for example "KEY".Dispatch(); implies that a string type key is being used

By default we allow the use of string and int. But that doesn't stop you from wanting to include more key types, such as a custom enum.

Here is a simple example

{% code lineNumbers="true" fullWidth="true" %}

```csharp
//######################## 
// String Key
//######################## 
"StringKey".Dispatch();
"StringKey".Store();
"StringKey".DispatchState(true);
"StringKey".StoreState(false, OnFakeStateMethod);
"StringKey".IEnumerator();
"StringKey".Task();
private static async Task Example()
{
  await "StringKey"; // Calls "StringKey".Task();
}

//######################## 
// Int Key
//######################## 
42.Dispatch();
42.Store();
42.DispatchState(true);
42.StoreState(false, OnFakeStateMethod);
42.IEnumerator();
42.Task();
private static async Task Example()
{
  await 42; // Calls 42.Task();
}

//######################## 
// CustomEnumEvent Key
//######################## 
CustomEnumEvent.OnPlayerDead.Dispatch();
CustomEnumEvent.OnPlayerDead.Store();
CustomEnumEvent.OnPlayerDead.DispatchState(true);
CustomEnumEvent.OnPlayerDead.StoreState(false, OnFakeStateMethod);
CustomEnumEvent.OnPlayerDead.IEnumerator();
CustomEnumEvent.OnPlayerDead.Task();
private static async Task Example()
{
  await CustomEnumEvent.OnPlayerDead; // Calls CustomEnumEvent.OnPlayerDead.Task();
}
```

{% endcode %}

For more information about how to create your own Custom Key take a look here

{% content-ref url="/pages/4StbOPHdZoYH3oYR82oG" %}
[How to use a custom Key?](/uniflux/tutorials/how-to-use-a-custom-key.md)
{% endcontent-ref %}