ExpansionPanelRadio constructor

ExpansionPanelRadio({@required Object value, @required ExpansionPanelHeaderBuilder headerBuilder, @required Widget body })

An expansion panel that allows for radio functionality.

A unique value must be passed into the constructor. The headerBuilder, body, value must not be null.

Implementation 

ExpansionPanelRadio({
  @required this.value,
  @required ExpansionPanelHeaderBuilder headerBuilder,
  @required Widget body,
}) : assert(value != null),
     super(body: body, headerBuilder: headerBuilder);