src/vs/editor/contrib/peekView/browser/peekView.ts/PeekViewWidget/constructor
class PeekViewWidget:	constructor(
		editor: ICodeEditor,
		options: IPeekViewOptions,
		@IInstantiationService protected readonly instantiationService: IInstantiationService
	) {
		super(editor, options);
		objects.mixin(this.options, defaultOptions, false);
	}