docs: def create(self, user: str, *,
                 pwd: str, sgrp: str, comment: str=None) -> None:
          """Create new user."""
          data = {
              'action': 'add',
              'user': user,
              'pwd': pwd,
              'grp': 'users',
              'sgrp': sgrp
          }
  
          if comment:
              data['comment'] = comment
  
          self._request('post', URL, data=data)