I'd like to have more general solution, like:
```python
def is_button_shown(self, button_id):
       return self.q(css=VIDEO_BUTTONS[button_id]).visible
```
and you can use it so 
```python
self.is_button_shown('CC')
self.is_button_shown('volume')
self.is_button_shown('play')
```
and no need to create separate method for each button. Does it make sense?