src/vs/workbench/browser/parts/editor/breadcrumbsPicker.ts/OutlineTreeSorter/compare
class OutlineTreeSorter:	compare(a: E, b: E): number {
		if (this._order === 'name') {
			return this.comparator.compareByName(a, b);
		} else if (this._order === 'type') {
			return this.comparator.compareByType(a, b);
		} else {
			return this.comparator.compareByPosition(a, b);
		}
	}