assertEquals(
        ImmutableList.copyOf(type.getTypeParameters()),
        ImmutableList.copyOf(returnType.getActualTypeArguments()));
  }

  public void testConstructor_exceptionTypes() throws Exception {
    assertEquals(
        ImmutableList.of(TypeToken.of(NullPointerException.class)),
        Prepender.constructor(String.class, int.class).getExceptionTypes());
  }