How to perform pinch in operation in android device using appium?

Code Snippet: //Java-Client version: Latest(7.0.0) //Appium version: 1.9.1 AndroidTouchAction firstFinger= new AndroidTouchAction(driver); firstFinger.press(PointOption.point(xOffset, yOffset-20)).moveTo(PointOption.point(xOffset, yOffset-200)); AndroidTouchAction secondFnger= new AndroidTouchAction(driver); secondFnger.press(PointOption.point(xOffset, yOffset+20)).moveTo(PointOption.point(xOffset, yOffset+200)); MultiTouchAction action= new MultiTouchAction(driver); action.add(firstFinger).add(secondFnger).perform(); Thread.sleep(10000);