code: def add_group(self, group_id, name, desc):
          '''Add a new parameter group.
  
          Parameters
          ----------
          group_id : int
              The numeric ID for a group to check or create.
          name : str, optional
              If a group is created, assign this name to the group.
          desc : str, optional
              If a group is created, assign this description to the group.
  
          Returns
          -------
          group : :class:`Group`
              A group with the given ID, name, and description.
  
          Raises
          ------
          KeyError
              If a group with a duplicate ID or name already exists.
          '''
          if group_id in self.groups:
              raise KeyError(group_id)
          name = name.upper()
          if name in self.groups:
              raise KeyError(name)
          group = self.groups[name] = self.groups[group_id] = Group(name, desc)
          return grouf add_group(self, group_id, name, desc):
          '''Add a new parameter group.
  
          Parameters
          ----------
          group_id : int
              The numeric ID for a group to check or create.
          name : str, optional
              If a group is created, assign this name to the group.
          desc : str, optional
              If a group is created, assign this description to the group.
  
          Returns
          -------
          group : :class:`Group`
              A group with the given ID, name, and description.
  
          Raises
          ------
          KeyError
              If a group with a duplicate ID or name already exists.
          '''
          if group_id in self.groups:
              raise KeyError(group_id)
          name = name.upper()
          if name in self.groups:
              raise KeyError(name)
          group = self.groups[name] = self.groups[group_id] = Group(name, desc)
          return group
docs: Add a new parameter group.
  
          Parameters
          ----------
          group_id : int
              The numeric ID for a group to check or create.
          name : str, optional
              If a group is created, assign this name to the group.
          desc : str, optional
              If a group is created, assign this description to the group.
  
          Returns
          -------
          group : :class:`Group`
              A group with the given ID, name, and description.
  
          Raises
          ------
          KeyError
              If a group with a duplicate ID or name already exists.