# Editor.LibrarySystem.Add

```csharp
static System.Threading.Tasks.Task Add(string folderName, System.Threading.CancellationToken token)
```

Add a library from this folder

### Parameters

- `folderName` (`string`)
- `token` (`System.Threading.CancellationToken`)

### Returns

`System.Threading.Tasks.Task`

Declared in [Editor.LibrarySystem](/api/Editor.LibrarySystem).
Assembly: `Sandbox.Tools`.