parent property
Implementation
@override
PCanvasElement? get parent => _parent;
Implementation
@override
set parent(PCanvasElement? parent) {
  if (!identical(parent, _parent)) {
    _parent = parent;
    _buildComputer();
  }
}
@override
PCanvasElement? get parent => _parent;
@override
set parent(PCanvasElement? parent) {
  if (!identical(parent, _parent)) {
    _parent = parent;
    _buildComputer();
  }
}