onclose property
      
      dynamic Function(CloseEvent)?
      get
      onclose
      
    
    
    
Implementation
_i2.dynamic Function(_i3.CloseEvent)? get onclose =>
    (_i3.CloseEvent p0) => _i4.callMethod(
          _i4.getProperty(
            this,
            'onclose',
          ),
          r'call',
          [
            this,
            p0,
          ],
        );
      
      set
      onclose
      (dynamic value(CloseEvent)?) 
      
    
    
    
Implementation
set onclose(_i2.dynamic Function(_i3.CloseEvent)? value) {
  _i4.setProperty(
    this,
    'onclose',
    value == null ? _i6.undefined : _i4.allowInterop(value),
  );
}