docs: def as_dict(self):
          """ returns a dictionary view of the option
          
          :returns: the option converted in a dict
          :rtype: dict
          """
          info = {}
          info["type"] = self.__class__.__name__
          info["help"] = self.help
          info["default"] = self.default
          info["multi"] = self.multi
          info["uniq"] = self.uniq
          info["choices"] = self.choices
          # TODO appel rec sur les attrs
          #info["attrs"] = self.attrs
          return info