ModExtraAssets is no longer getting updated for classic. However, since 2024 there's a MEA Revamped version that fits BepInEx moddding BB+ perfectly!
void ChangeRPC(string details = "", string largeImageKey = "", string largeImageText = "", string smallImageKey = "", string smallImageText = "", string state = "")
Used to change Rich Presence information (needs initialization)
using System;
using UnityEngine;
public class Example : MonoBehaviour
{
private void Start()
{
ModExtraAssets.DiscordRPC.ChangeRPC("Details", "myLargeIcon", "Large", "mySmallIcon", "Small", "State");
}
}