docs: def _execute_command(cmd, at_time=None):
      '''
      Helper function to execute the command
  
      :param str cmd: the command to run
  
      :param str at_time: If passed, the cmd will be scheduled.
  
      Returns: bool
      '''
      if at_time:
          cmd = 'echo \'{0}\' | at {1}'.format(cmd, _cmd_quote(at_time))
      return not bool(__salt__['cmd.retcode'](cmd, python_shell=True))