src/vs/base/browser/ui/tree/abstractTree.ts/AbstractTree/reveal
class AbstractTree:	reveal(location: TRef, relativeTop?: number): void {
		this.model.expandTo(location);

		const index = this.model.getListIndex(location);

		if (index === -1) {
			return;
		}

		this.view.reveal(index, relativeTop);
	}