Creates a material list.
By default, has a type of MaterialListType.twoLine.
Source
MaterialList({
Key key,
this.initialScrollOffset,
this.onScrollStart,
this.onScroll,
this.onScrollEnd,
this.type: MaterialListType.twoLine,
this.children: const <Widget>[],
this.padding: EdgeInsets.zero,
this.scrollableKey
}) : super(key: key);