- override
Called by subclasses when they decide a render object is no longer a child.
Only for use by subclasses when changing their child lists. Calling this in other cases will lead to an inconsistent tree and probably cause crashes.
Source
@override
void dropChild(RenderObject child) {
final AutoLayoutParentData childParentData = child.parentData;
childParentData._removeImplicitConstraints();
assert(child.parentData == childParentData);
super.dropChild(child);
}