如何将动态数量的列表传递给varargs方法？

Question

我试图为单元测试编写一个可重用的方法，以便能够模拟返回List<String>的某个类的行为，以便我可以调用此mockInstansiate方法设置模拟。如何为thenReturn()方法传入多个列表？我知道我可以做.thenReturn().thenReturn().thenReturn etc，但我希望能够让这种动态变得充满活力，因为我不知道我会有多少名单。

我得到的错误是：

Cannot create a generic array of ArrayList<String>

代码：

private void mockInstansiate (List<String> wheels) {
    Machine machine = mock(Machine.class);
    List<List<String>> results = new ArrayList<List<String>>();

    for(String wheel : wheels) {
        List<String> result = new ArrayList<String>();
        result.add(wheel);

        results.add(result);
    }

    List<String> wheel1 = results.remove(0);

    /* Issue here, I'm trying to create an array of List<String> to pass
     * into the second part of thenReturn() */
    List<String>[] otherLists = new ArrayList<String>[9];
    when(machine.getLists()).thenReturn(wheel1, results.toArray(otherLists));
}

class Machine {
    public List<String> getLists() {
        // Doesn't matter what's here, it's being mocked out
    }
}