visitChildren method Null safety
- RenderObjectVisitor visitor
override
Calls visitor for each immediate child of this render object.
Override in subclasses with children and call the visitor for each child.
Implementation
@override
void visitChildren(RenderObjectVisitor visitor) {
final RenderObject? foregroundChild = _foregroundRenderObject;
final RenderObject? backgroundChild = _backgroundRenderObject;
if (foregroundChild != null)
visitor(foregroundChild);
if (backgroundChild != null)
visitor(backgroundChild);
super.visitChildren(visitor);
}