Dart APIlicense_listLicenseListPageLicenseListPage const constructor LicenseListPage constructor Null safety const LicenseListPage({Key? key, required dynamic onSelectPackage(String packageName )} ) Implementation const LicenseListPage({super.key, required this.onSelectPackage}); unself_license_list license_list LicenseListPage LicenseListPage const constructor LicenseListPage class Constructors LicenseListPage Properties hashCode key onSelectPackage runtimeType Methods build createElement debugDescribeChildren debugFillProperties noSuchMethod toDiagnosticsNode toString toStringDeep toStringShallow toStringShort Operators operator ==