keys property
      
      IterableIterator<num>  Function()
      get
      keys
      
    
    
    
Implementation
_i10.IterableIterator<_i2.num> Function() get keys => () => _i4.callMethod(
      _i4.getProperty(
        this,
        'keys',
      ),
      r'call',
      [this],
    );
      
      set
      keys
      (IterableIterator<num>  value()) 
      
    
    
    
Implementation
set keys(_i10.IterableIterator<_i2.num> Function() value) {
  _i4.setProperty(
    this,
    'keys',
    _i4.allowInterop(value),
  );
}