Quería crear un sistema de registro de roles para mi servidor de juegos de roles, pero necesito que el bot obtenga el nombre de quién le dio el rol a esa persona.

 client.on("guildMemberUpdate", (oldMember, newMember) => { // Old roles Collection is higher in size than the new one. A role has been removed. if (oldMember.roles.cache.size > newMember.roles.cache.size) { // Creating an embed message. const Embed = new Discord.MessageEmbed(); Embed.setColor("RED"); Embed.setAuthor(newMember.user.tag, newMember.user.avatarURL()); // Looping through the role and checking which role was removed. oldMember.roles.cache.forEach(role => { if (!newMember.roles.cache.has(role.id)) { Embed.addField("Role Removed", role); } }); client.channels.cache.get("872558074290896908").send(Embed); } else if (oldMember.roles.cache.size < newMember.roles.cache.size) { const Embed = new Discord.MessageEmbed(); Embed.setColor("GREEN"); Embed.setAuthor(newMember.user.tag, newMember.user.avatarURL()); // Looping through the role and checking which role was added. newMember.roles.cache.forEach(role => { if (!oldMember.roles.cache.has(role.id)) { Embed.addField("Role Added", role); } }); client.channels.cache.get("872558074290896908").send(Embed); } });