src/vs/base/browser/ui/grid/gridview.ts/GridView/_deserialize
class GridView:	private _deserialize(root: ISerializedBranchNode, orientation: Orientation, deserializer: IViewDeserializer<ISerializableView>, orthogonalSize: number): void {
		this.root = this._deserializeNode(root, orientation, deserializer, orthogonalSize) as BranchNode;
	}