I'm using `EarlGrey`for automated UI testing on an iOS project. I want to check whether the keyboard is shown or not after swiping away on the screen.

I've seen the header file in `EarlGrey` framework named [GREYKeyboard.h](https://github.com/google/EarlGrey/blob/master/EarlGrey/Core/GREYKeyboard.h) with a function named `isKeyboardShown` with a bool return value. This would be very helpful for me, but I don't know how to use it since I have no access to this API.

`EarlGrey` is installed with `Carthage`.