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    Type Alias PastCodeMeta

    PastCodeMeta: StorageDescriptor<
        [Key: number],
        {
            last_pruned?: number;
            upgrade_times: { activated_at: number; expected_at: number }[];
        },
        false,
        never,
    >

    Past code of parachains. The parachains themselves may not be registered anymore, but we also keep their code on-chain for the same amount of time as outdated code to keep it available for approval checkers.