Show the country code of a joining player about vermintide-mods HOT 2 OPEN

Update (2022-09-13):

Hooking into ChatManager.send_system_chat_message_to_all_except serves the purpose of displaying a custom message for joining/leaving players, but Steam.user_country_code() doesn't take a peer id to return the country code of said peer, unlike Steam.user_name() that takes a peer_id and returns the Steam nick name. And Steam functions have a single different source, since they are C functions. Maybe I need to conduct the SteamWorks API documentations.

Steam = {
id_32bit_to_id = "C function",
is_overlay_enabled = "C function",
poll_encrypted_app_ticket = "C function",
id_hex_to_dec = "C function",
install_event = "C function",
user_id = "C function",
retrieve_encrypted_app_ticket = "C function",
owns_app = "C function",
id_to_id_32bit = "C function",
open_url = "C function",
poll_auth_session_ticket = "C function",
connected = "C function",
open_overlay_store = "C function",
run_callbacks = "C function",
open_overlay = "C function",
user_country_code = "C function",
is_installed = "C function",
language = "C function",
user_name = "C function",
_name = "Steam",
retrieve_auth_session_ticket = "C function",
app_id = "C function",
}

from vermintide-mods.

Update: (2022-09-15):

As expected the function Steam.user_country_code() doesn't take any arguments:
https://partner.steamgames.com/doc/api/ISteamUtils#GetIPCountry

from vermintide-mods.