如何获取"gen_server“的本地名称？

-module(my_server).
-behaviour(gen_server).

-export([start_link/0, init/1, handle_call/3, handle_cast/2, handle_info/2, terminate/2, code_change/3]).

start_link() ->
    gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).

init([]) ->
    {ok, []}.

handle_call(Request, From, State) ->
    Reply = process_request(Request),
    {reply, Reply, State}.

handle_cast(Request, State) ->
    NewState = process_request(Request),
    {noreply, NewState}.

handle_info(Info, State) ->
    {noreply, State}.

terminate(Reason, State) ->
    ok.

code_change(OldVsn, State, Extra) ->
    {ok, State}.

process_request(Request) ->
    % 处理请求的逻辑
    Reply = ...,
    Reply.

get_server_pid() ->
    gen_server:whereis(?MODULE).