anchor.diff:              fontSize: 20,
             ),
           ),
  +        contentPadding: EdgeInsets.all(3.0),
           subtitle: Row(
             children: <Widget>[
               Text(
  
positive.code:               ),
              ),
              Container(
                width: 10,
                height: 10,
                margin: EdgeInsets.all(10),
                decoration: BoxDecoration(
                  color: model.isOpen ? Colors.green : Colors.red,
                  shape: BoxShape.circle,
  
negative.code:   }
  
    num percentAvailability(AvailabilityModel location) {
      num percentAvailable = 0.0;
  
      if(location.estimated != 0.0) {
        percentAvailable =
            1 - ((location.busyness) / location.estimated).toDouble();
      }
  