src/vs/platform/driver/browser/driver.ts/BrowserWindowDriver/getElementXY
class BrowserWindowDriver:	async getElementXY(selector: string, xoffset?: number, yoffset?: number): Promise<{ x: number; y: number }> {
		const offset = typeof xoffset === 'number' && typeof yoffset === 'number' ? { x: xoffset, y: yoffset } : undefined;
		return this._getElementXY(selector, offset);
	}