# SystemBaseDelegates.Function

> Used by compilation pipeline internally to support optional burst compilation of ISystem methods

## Definition

* **Type:** Delegate
* **Namespace:** [Unity.Entities](/engine/7000.0/script-reference/unity/entities.md)
* **Assembly:** UnityEngine.EntitiesModule

```csharp
public delegate void SystemBaseDelegates.Function(nint systemPtr, nint state)
```