# GetUIDInfo(out HierarchyUIDInfo)

> Returns the UID serialization info for this handler. A HierarchyUIDInfo.Size of 0 means this handler does not support UID serialization and its nodes will be skipped. UID serialization is used in Hierarchy view state serialization and Undo/Redo operations.

## Definition

* **Type:** Method
* **Namespace:** [Unity.Hierarchy](/engine/6000.7/script-reference/unity/hierarchy.md)
* **Assembly:** UnityEngine.HierarchyCoreModule

## GetUIDInfo(HierarchyUIDInfo)

```csharp
protected virtual void GetUIDInfo(out HierarchyUIDInfo info)
```

### Parameters

**** (\[HierarchyUIDInfo]\(/engine/6000.7/script-reference/unity/hierarchy/hierarchyuidinfo)): The UID info containing the format version and per-node byte size.