You're seeing just the function rename, go back to Slack.Web.Channels module for more information.
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rename(channel, name, optional_params \\ %{})

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Renames a channel.

Required Params

  • channel - Channel to rename
  • name - New name for channel.

Errors the API can return:

  • channel_not_found - Value passed for channel was invalid.
  • invalid_name - New name is invalid
  • name_taken - New channel name is taken
  • not_authorized - Caller cannot rename this channel
  • not_in_channel - Caller is not a member of the channel.