import org.checkerframework.checker.initialization.qual.UnderInitialization;
import org.checkerframework.checker.nullness.qual.Nullable;

public class GenericTest12b {
  class Cell<T1 extends @Nullable Object> {}

  class Node<CONTENT extends @Nullable Object> {
    public Node(Cell<CONTENT> userObject) {}

    void nodecall(@UnderInitialization Node<CONTENT> this, Cell<CONTENT> userObject) {}
  }

  class RootNode extends Node<Void> {
    public RootNode() {
      super(new Cell<Void>());
      call(new Cell<Void>());
      nodecall(new Cell<Void>());
    }

    void call(@UnderInitialization RootNode this, Cell<Void> userObject) {}
  }
}