status method

Implementation

PowerAssertionStatus status() {
  final handle = _handle;
  return PowerAssertionStatus(
    level: level,
    hold: hold,
    held: handle?.held ?? false,
    detail:
        handle?.description ??
        switch (level) {
          PowerAssertionLevel.off => 'disabled by config',
          _ => 'not acquired',
        },
  );
}