如何在C#中使用扩展方法获得嵌套字典？

public static class DictionaryExtensions
{
    public static TValue GetValue<TKey, TValue>(this IDictionary<TKey, TValue> dictionary, params TKey[] keys)
    {
        foreach (var key in keys)
        {
            if (dictionary.TryGetValue(key, out TValue value))
            {
                if (value is IDictionary<TKey, TValue> nestedDictionary)
                {
                    return nestedDictionary.GetValue(keys.Skip(1).ToArray());
                }
                else
                {
                    return value;
                }
            }
        }
        throw new KeyNotFoundException("Key not found in dictionary.");
    }
}

var dictionary = new Dictionary<string, object>
{
    { "key1", "value1" },
    { "key2", new Dictionary<string, object>
        {
            { "nestedKey1", "nestedValue1" },
            { "nestedKey2", new Dictionary<string, object>
                {
                    { "nestedNestedKey", "nestedNestedValue" }
                }
            }
        }
    }
};

var value = dictionary.GetValue("key2", "nestedKey2", "nestedNestedKey");
Console.WriteLine(value); // 输出：nestedNestedValue