code: def get_list_key(self, data, key, header_lines=2):
          
          return super(NumpydocTools, self).get_list_key(data, key, header_lines=header_lines)
docs: Get the list of a key elements.
          Each element is a tuple (key=None, description, type=None).
          Note that the tuple's element can differ depending on the key.
  
          :param data: the data to proceed
          :param key: the key