Dose Not Work With Discord.js@Dev (V13)

[VidulHB]

error = const { Structures } = require("discord.js");
const MusicHandler = require("../structures/MusicHandler");

const Guild = Structures.get("Guild"); <-- get Is Not Defined

class MusicGuild extends Guild {
constructor(client, data) {
super(client, data);
this.music = new MusicHandler(this);
}
}

Structures.extend("Guild", () => MusicGuild);

[Allvaa]

discordjs/discord.js#6027

[yofukashino]

why is this issue still open?