supervisor behaviour template lost shutdown parameter

[yours0]

-spec init(Args :: term()) -> Result when Result :: {ok, {SupervisionPolicy, [ChildSpec]}} | ignore, SupervisionPolicy :: {RestartStrategy, MaxR :: non_neg_integer(), MaxT :: pos_integer()}, RestartStrategy :: one_for_all | one_for_one | rest_for_one | simple_one_for_one, ChildSpec :: {Id :: term(), StartFunc, RestartPolicy, Type :: worker | supervisor, Modules}, StartFunc :: {M :: module(), F :: atom(), A :: [term()] | undefined}, RestartPolicy :: permanent | transient | temporary, Modules :: [module()] | dynamic.

in ChildSpec , lost shutdown parameter