-spec start_link(Op ::
                     #{id := child_id(),
                       name := Pool :: telegram_bot_api:pool_name(),
                       update_time := UpdateTime :: integer(),
                       offset := Offset :: integer(),
                       event := Event :: telegram_bot_api_app:event(),
                       limit => Limit :: integer(),
                       allowed_updates => AllowedUpdates :: [telegram_bot_api:update_type(), ...]}) ->
                    {ok, pid()} | {error, {already_started, pid()}} | {error, term()}.