child property

@override Widget get child

The widget below this widget in the tree.

This widget can only have one child. To lay out multiple children, let this widget's child be a widget such as Row, Column, or Stack, which have a children property, and then provide the children to that widget.

Implementation

@override
Widget get child {
  assert(_maybeChild != null,
      '$ServiceWidget must have a child if is not nesed inside a ${ServiceWidget.multi} constructor');
  return _maybeChild!;
}