Does AndroidDriver not support findElementByCssSelector?

Hi,

I have created a new AndroidDriver called driver.

I am then trying to find an element by cssselector as shown below:

driver.findElementByCssSelector("#com.gbg.verify.gbgtestapp:id/toolbar .android.widget.TextView");

However I get an error saying:

Appium error: Locator Strategy ‘css selector’ is not supported for this session

findElementById works fine.