framework/tests/all-systems/Issue3929.java

import java.util.ArrayList;
import java.util.List;

public class Issue3929 {

  public void endElement(DefaultKeyedValues3929 arg) {
    for (Object o : arg.getKeys()) {}
  }
}

class DefaultKeyedValues3929<K extends Comparable<K>> {
  public List<K> getKeys() {
    return new ArrayList<>();
  }
}