Alchemy.Events.on_channel_create

You're seeing just the macro on_channel_create, go back to Alchemy.Events module for more information.
Link to this macro

on_channel_create(func)

(macro)

Registers a handle triggering whenever a channel gets created.

args : Alchemy.Channel.t

As opposed to on_DMChannel_create, this gets triggered when a channel gets created in a guild, and not when a user starts a DM with this client.

Examples

Events.on_channel_create(:foo)
def foo(channel), do: IO.inspect channel.name