import org.checkerframework.checker.nullness.qual.EnsuresNonNull;
import org.checkerframework.dataflow.qual.SideEffectFree;

public class Super {
  Object f;
  Object g;
  Object h;

  @EnsuresNonNull("f")
  void setf() {
    f = new Object();
  }

  void setg() {
    g = null;
  }

  @SideEffectFree
  void seth() {
    h = null;
  }
}