src/vs/workbench/contrib/preferences/browser/keybindingsEditorContribution.ts/DefineKeybindingController/_disposeKeybindingWidgetRenderer
class DefineKeybindingController:	private _disposeKeybindingWidgetRenderer(): void {
		if (this._keybindingWidgetRenderer) {
			this._keybindingWidgetRenderer.dispose();
			this._keybindingWidgetRenderer = undefined;
		}
	}