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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def lower_dict_keys(origin_dict):
 """ convert keys in dict to lower case Args: origin_dict (dict):
 mapping data structure Returns: dict: mapping with all keys lowered. Examples: "Name": "", "Request": "", "URL": "", "METHOD": "", "Headers": "", "Data": "" } { "name": "", "request": "", "url": "", "method": "", "headers": "", "data": "" } """

    if not origin_dict or not isinstance(origin_dict, dict):
        return origin_dict

    return {
        key.lower(): value
        for key, value in origin_dict.items()
    }