lib/live_query/protocol/callback_unregistered.ex
defmodule LiveQuery.Protocol.CallbackUnregistered do
@moduledoc """
Sent in response to a `LiveQuery.Protocol.UnegisterCallback` call.
Additionally, a list of these are returned in response to a `LiveQuery.Protocol.UnegisterAllCallbacks` call.
The `cb_key` is the same one used to identify the callback when registering it.
"""
@enforce_keys [:query_key, :client_pid, :cb_key]
defstruct [:query_key, :client_pid, :cb_key]
end