src/vs/workbench/contrib/typeHierarchy/browser/typeHierarchy.contribution.ts/TypeHierarchyController/showSupertypes
class TypeHierarchyController:	showSupertypes(): void {
		this._widget?.updateDirection(TypeHierarchyDirection.Supertypes);
		this._ctxDirection.set(TypeHierarchyDirection.Supertypes);
	}