# NodeMethod delegate

Namespace: [GrasshopperIO.DataBase](https://developer.rhino3d.com/api/gh2/namespace/grasshopperio.database.md) · Assembly: [GrasshopperIO](https://developer.rhino3d.com/api/gh2/assembly/grasshopperio.md)

```cs
public delegate NodeMethod
```

Method used for operating on nodes inside an archive.

**Signature:**

```cs
bool NodeMethod(Node node, object parentToken, out object childToken)
```

**Parameters:**

- `node` ([Node](https://developer.rhino3d.com/api/gh2/type/grasshopperio.database.node.md)): Node.
- `parentToken` ([object](https://learn.microsoft.com/dotnet/api/system.object)): Token handed down from parental node.
- `childToken` (out [object](https://learn.microsoft.com/dotnet/api/system.object)): Token to be passed to all immediate children and items of this node.