preventExtensions property
      
      bool Function(T)
      get
      preventExtensions
      
    
    
    
Implementation
_i2.bool Function(T) get preventExtensions => (T p0) => _i4.callMethod(
      _i4.getProperty(
        this,
        'preventExtensions',
      ),
      r'call',
      [
        this,
        p0,
      ],
    );
      
      set
      preventExtensions
      (bool value(T)) 
      
    
    
    
Implementation
set preventExtensions(_i2.bool Function(T) value) {
  _i4.setProperty(
    this,
    'preventExtensions',
    _i4.allowInterop(value),
  );
}