num volume

Source 

@DomName('MediaController.volume')
@DocsEditable()
num get volume => _blink.BlinkMediaController.instance.volume_Getter_(this);
void volume=(num value)

Source 

@DomName('MediaController.volume')
@DocsEditable()
set volume(num value) =>
    _blink.BlinkMediaController.instance.volume_Setter_(this, value);