platformBrightnessTestValue property
Hides the real platform brightness and reports the given
platformBrightnessTestValue
instead.
Implementation
set platformBrightnessTestValue(Brightness platformBrightnessTestValue) { // ignore: avoid_setters_without_getters
_platformBrightnessTestValue = platformBrightnessTestValue;
onPlatformBrightnessChanged?.call();
}