code: def remove(self, option):
          
          for existing_option in self._options:
              if existing_option[1] == option:
                  self._options.remove(existing_option)
                  self._refresh_options()
                  return True
          return False
docs: Removes the first `option` from the ButtonGroup.
  
          Returns `True` if an item was removed.
  
          :param string option:
              The value of the option to remove from the ButtonGroup.