private static final long serialVersionUID = 1L;
  }

  /**
   * Class for testing all permutations of static/non-static one-argument methods using
   * methodParameter().
   */
  @SuppressWarnings("unused") // used by reflection
  public static class OneArg {

    public static void staticOneArgCorrectlyThrowsNpe(String s) {
      checkNotNull(s); // expect NPE here on null