}

  private static <N1 extends Number, N11 extends N1> void assignabilityTestWithTypeVariables() {
    assertTrue(new Assignability<N11, N1>() {}.isAssignable());
    assertTrue(new Assignability<N11, Number>() {}.isAssignable());
    assertFalse(new Assignability<Number, N11>() {}.isAssignable());
  }

  public void testIsArray_arrayClasses() {