detach method

@override void detach()

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();
  if (_header != null) _header!.detach();
  if (_child != null) _child!.detach();
}