src/vs/platform/driver/node/driver.ts/DriverChannelClient/getElementXY
class DriverChannelClient:	getElementXY(windowId: number, selector: string, xoffset: number | undefined, yoffset: number | undefined): Promise<{ x: number; y: number }> {
		return this.channel.call('getElementXY', [windowId, selector, xoffset, yoffset]);
	}