src/vs/workbench/contrib/callHierarchy/browser/callHierarchyPeek.ts/CallHierarchyTreePeekWidget/dispose
class CallHierarchyTreePeekWidget:	override dispose(): void {
		LayoutInfo.store(this._layoutInfo, this._storageService);
		this._splitView.dispose();
		this._tree.dispose();
		this._editor.dispose();
		super.dispose();
	}