如何对嵌套的json使用keyTextTransform()？

# 嵌套的JSON数据
nested_json = {
  "data": {
    "person": {
      "name": "John",
      "age": 30,
      "address": {
        "street": "123 ABC Street",
        "city": "XYZ City"
      }
    }
  }
}

# 递归函数实现对嵌套JSON的键进行转换
def transform_keys(json_data):
    if isinstance(json_data, dict):
        transformed_dict = {}
        for key, value in json_data.items():
            transformed_key = keyTextTransform(key)  # 使用keyTextTransform()方法转换键
            transformed_value = transform_keys(value)  # 递归处理嵌套的值
            transformed_dict[transformed_key] = transformed_value
        return transformed_dict
    elif isinstance(json_data, list):
        transformed_list = []
        for item in json_data:
            transformed_item = transform_keys(item)  # 递归处理嵌套的列表项
            transformed_list.append(transformed_item)
        return transformed_list
    else:
        return json_data

# 示例的keyTextTransform()方法实现
def keyTextTransform(key):
    # 假设这里是对键进行大写转换的实现
    transformed_key = key.upper()
    return transformed_key

# 对嵌套的JSON数据应用keyTextTransform()方法
transformed_json = transform_keys(nested_json)
print(transformed_json)