detach method
override
Mark this render object as detached from its PipelineOwner.
Typically called only from the parent's detach, and by the owner to mark the root of a tree as detached.
Subclasses with children should override this method to
detach all their children after calling the inherited method,
as in super.detach()
.
Implementation
@override
void detach() {
super.detach();
ChildType? child = _firstChild;
while (child != null) {
child.detach();
final ParentDataType childParentData = child.parentData! as ParentDataType;
child = childParentData.nextSibling;
}
}