Dart APIunself_componentUnAppPageimplyLeading implyLeading property Null safety bool implyLeading final Implementation final bool implyLeading; unself_component unself_component UnAppPage implyLeading property UnAppPage class Constructors UnAppPage Properties description hashCode implyLeading isImmersive key leading name runtimeType slivers trailing Methods build createElement debugDescribeChildren debugFillProperties noSuchMethod toDiagnosticsNode toString toStringDeep toStringShallow toStringShort Operators operator ==