LocationUpdate.initial constructor Null safety

Implementation

LocationUpdate.initial()
    : id = '',
      metersPassed = 0,
      speed = 0,
      averageSpeed = 0,
      longitude = 0,
      latitude = 0,
      timestamp = DateTime.now().toIso8601String(),
      accuracy = 0,
      originalLocation = null,
      timeElapsed = Duration.zero;