-spec around(binary(), binary(), pos_integer()) -> [{binary(), number(), pos_integer()}].

-spec handle_call(term(), gen_server:from(), map()) -> {reply, term(), map()}.

-spec handle_cast(term(), map()) -> {noreply, map()}.

-spec handle_info(term(), map()) -> {noreply, map()}.

-spec init(binary()) -> {ok, map()}.

-spec rank(binary(), binary()) -> {ok, pos_integer()} | {error, not_found}.

-spec start_link(binary()) -> gen_server:start_ret().

-spec submit(binary(), binary(), integer()) -> ok | {error, capacity_reached}.

-spec terminate(term(), map()) -> ok.

-spec top(binary(), pos_integer()) -> [{binary(), number(), pos_integer()}].