lib/behaviours.ex
defmodule ExCheckout.Behaviours do
defmodule Transaction do
@callback module_id() :: any
end
defmodule Carrier do
@callback carrier() :: any
end
end
defmodule ExCheckout.Behaviours do
defmodule Transaction do
@callback module_id() :: any
end
defmodule Carrier do
@callback carrier() :: any
end
end