what is listFieldVertical in flutter code example

Example 1: flutter column

Column(
  crossAxisAlignment: CrossAxisAlignment.start,
  mainAxisSize: MainAxisSize.min,
  children: <Widget>[
    Text('We move under cover and we move as one'),
    Text('Through the night, we have one shot to live another day'),
    Text('We cannot let a stray gunshot give us away'),
    Text('We will fight up close, seize the moment and stay in it'),
    Text('It’s either that or meet the business end of a bayonet'),
    Text('The code word is ‘Rochambeau,’ dig me?'),
    Text('Rochambeau!', style: DefaultTextStyle.of(context).style.apply(fontSizeFactor: 2.0)),
  ],
)

Example 2: flutter create vertical list

ListView(
  padding: const EdgeInsets.all(8),
  children: <Widget>[
    Container(
      height: 50,
      color: Colors.amber[600],
      child: const Center(child: Text('Entry A')),
    ),
    Container(
      height: 50,
      color: Colors.amber[500],
      child: const Center(child: Text('Entry B')),
    ),
    Container(
      height: 50,
      color: Colors.amber[100],
      child: const Center(child: Text('Entry C')),
    ),
  ],
)