custom: fn _m, _a -> :ok end,
custom: fn m, a, o -> send(task.pid, {:apply_filter, {m, a, o}}) end,
save: fn _f, _o -> :ok end do
custom: fn _m, _a -> :ok end,
custom: fn m, a, o -> send(task.pid, {:apply_filter, {m, a, o}}) end,
save: fn _f, _o -> :ok end do