code: def subcommand_not_found(self, command, string):
          
          if isinstance(command, Group) and len(command.all_commands) > 0:
              return 'Command "{0.qualified_name}" has no subcommand named {1}'.format(command, string)
          return 'Command "{0.qualified_name}" has no subcommands.'.format(command)
docs: |maybecoro|
  
          A method called when a command did not have a subcommand requested in the help command.
          This is useful to override for i18n.
  
          Defaults to either:
  
          - ``'Command "{command.qualified_name}" has no subcommands.'``
              - If there is no subcommand in the ``command`` parameter.
          - ``'Command "{command.qualified_name}" has no subcommand named {string}'``
              - If the ``command`` parameter has subcommands but not one named ``string``.
  
          Parameters
          ------------
          command: :class:`Command`
              The command that did not have the subcommand requested.
          string: :class:`str`
              The string that contains the invalid subcommand. Note that this has
              had mentions removed to prevent abuse.
  
          Returns
          ---------
          :class:`str`
              The string to use when the command did not have the subcommand requested.