code: def lower_dict_keys(origin_dict):
      
      if not origin_dict or not isinstance(origin_dict, dict):
          return origin_dict
  
      return {
          key.lower(): value
          for key, value in origin_dict.items()
      }
docs: convert keys in dict to lower case
  
      Args:
          origin_dict (dict): mapping data structure
  
      Returns:
          dict: mapping with all keys lowered.
  
      Examples:
          >>> origin_dict = {
              "Name": "",
              "Request": "",
              "URL": "",
              "METHOD": "",
              "Headers": "",
              "Data": ""
          }
          >>> lower_dict_keys(origin_dict)
              {
                  "name": "",
                  "request": "",
                  "url": "",
                  "method": "",
                  "headers": "",
                  "data": ""
              }