code: def init_config_json(config_file):
      
      json_data = None
      try:
          if os.path.exists(config_file):
          #Load the config file
  
              with open(config_file) as json_file:
                  json_data = json.load(json_file)
                  return unicode_convert(json_data)
          else:
              return None
      except:
          line, filename, synerror = trace()
          raise ArcRestHelperError({
                      "function": "init_config_json",
                      "line": line,
                      "filename":  filename,
                      "synerror": synerror,
                                      }
                                      )
      finally:
          json_data = None
  
          del json_data
  
          gc.collect()
docs: Deserializes a JSON configuration file.
  
      Args:
          config_file (str): The path to the JSON file.
      Returns:
          dict: A dictionary object containing the JSON data. If ``config_file`` does not exist, returns ``None``.