GuildJoinRequest
constructor(userId: Snowflake, rejectionReason: String?, guildId: Snowflake, createdAt: Instant, status: ApplicationStatus, formResponses: List<GuildJoinRequestResponse>?, actionedByUser: DiscordUser? = null, actionedAtSnowflake: Snowflake? = null, id: Snowflake, user: DiscordUser)