Add getRole method

discord/discord-api-docs#7074

lib/routes/Guilds.ts

@@ -1498,6 +1498,21 @@ export default class Guilds {
         }).then(data => data.pruned);
     }
 
+    /**
+     * Get a role in a guild.
+     * @param guildID The ID of the guild.
+     * @param roleID The ID of the role to get.
+     * @caching This method **may** cache its result. The result will not be cached if the guild is not cached.
+     * @caches {@link Guild#roles | Guild#roles}
+     */
+    async getRole(guildID: string, roleID: string): Promise<Role> {
+        const guild = this._manager.client.guilds.get(guildID);
+        return this._manager.authRequest<RawRole>({
+            method: "GET",
+            path:   Routes.GUILD_ROLE(guildID, roleID)
+        }).then(data => guild?.roles.update(data, guildID) ?? new Role(data, this._manager.client, guildID));
+    }
+
     /**
      * Get the roles in a guild.
      * @param guildID The ID of the guild.

lib/structures/Guild.ts

@@ -1243,6 +1243,14 @@ export default class Guild extends Base {
         return this.client.rest.guilds.getPruneCount(this.id, options);
     }
 
+    /**
+     * Get a role in this guild. Only use this if you need to. See the `roles` collection.
+     * @param roleID The ID of the role to get.
+     */
+    async getRole(roleID: string): Promise<Role> {
+        return this.client.rest.guilds.getRole(this.id, roleID);
+    }
+
     /**
      * Get the roles in this guild. Only use this if you need to. See the `roles` collection.
      */