The payload of :thread_delete. Discord sends only the thread's ids and
type; old is the thread as cached, or nil.
Summary
Types
@type t() :: %Lingo.Event.ThreadDelete{ guild_id: String.t(), id: String.t(), old: Lingo.Type.Channel.t() | nil, parent_id: String.t() | nil, type: Lingo.Type.Channel.channel_type() | integer() }