# SystemBaseDelegates

> Delegates only used by compiler

## Definition

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

```csharp
public static class SystemBaseDelegates
```

## Delegates

| Delegate                                                                                                       | Description                                                                                      |
| -------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------ |
| [SystemBaseDelegates.Function](/engine/7000.0/script-reference/unity/entities/systembasedelegates/function.md) | Used by compilation pipeline internally to support optional burst compilation of ISystem methods |