src/vs/workbench/services/url/electron-sandbox/urlService.ts/RelayURLService/create
class RelayURLService:	override create(options?: Partial<UriComponents>): URI {
		const uri = super.create(options);

		let query = uri.query;
		if (!query) {
			query = `windowId=${encodeURIComponent(this.nativeHostService.windowId)}`;
		} else {
			query += `&windowId=${encodeURIComponent(this.nativeHostService.windowId)}`;
		}

		return uri.with({ query });
	}