method GuildBans.prototype.addimport { GuildBans } from "https://deno.land/x/harmony@v2.9.0/src/structures/guild.ts"; add(user: string | User,reason?: string,deleteMessagesDays?: number,): Promise<void>Bans a User. Parametersuser: string | UserUser to ban, ID or User object. optionalreason: stringReason for the Ban. optionaldeleteMessagesDays: numberDelete Old Messages? If yes, how much days. ReturnsPromise<void>