code: def response_list(data, key):
      
      if key not in data:
          return None
  
      if isinstance(data[key], list):
          return data[key]
  
      else:
          return [data[key],]
docs: Obtain the relevant response data in a list.
  
      If the response does not already contain the result in a list, a new one
      will be created to ease iteration in the parser methods.
  
      Args:
          data (dict): API response.
          key (str): Attribute of the response that contains the result values.
  
      Returns:
          List of response items (usually dict) or None if the key is not present.