# Null

> An invalid KeyValue.

## Definition

* **Type:** Property
* **Namespace:** [Unity.Collections.LowLevel.Unsafe](/engine/6000.7/script-reference/unity/collections/lowlevel/unsafe.md)
* **Assembly:** UnityEngine.ManagedKernelModule

```csharp
public static KeyValue<TKey, TValue> Null { get; }
```