visitChildren method
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) {
super.visitChildren(visitor);
if (_minProtoType != null) {
visitor(_minProtoType!);
}
if (_maxProtoType != null) {
visitor(_maxProtoType!);
}
}