package java.util; import checkers.nullness.quals.*; @checkers.quals.DefaultQualifier("checkers.nullness.quals.NonNull") public abstract class ListResourceBundle extends ResourceBundle { public ListResourceBundle() { throw new RuntimeException("skeleton method"); } public final @Nullable Object handleGetObject(@Nullable String a1) { throw new RuntimeException("skeleton method"); } public Enumeration<String> getKeys() { throw new RuntimeException("skeleton method"); } }