code: def unregister(self, command):
          
          if command not in self._commands.keys():
              self.log.warning("Can not unregister command %s" % command)
          else:
              # Click does not have any kind of a function to unregister/remove/deactivate already added commands.
              # So we need to delete the related objects manually from the click internal commands dictionary for
              # our root command.
              del(self._click_root_command.commands[command])
              # Finally lets delete the command from our internal dictionary too.
              del(self._commands[command])
              self.log.debug("Command %s got unregistered" % command)
docs: Unregisters an existing command, so that this command is no longer available on the command line interface.
  
          This function is mainly used during plugin deactivation.
  
          :param command: Name of the command