slack
users.list method | Slack real_nameまたはdisplay_nameにメンション用文字列? 詳細未調査
https://slack.zendesk.com/hc/en-us/articles/201259356-Using-slash-commands /kick user or /remove user Removes user from the current channel or private group. This action may be restricted to owners or admins.めも、未検証