Type Alias PastCodeMeta

PastCodeMeta: StorageDescriptor<[Key: number], {
    last_pruned?: number;
    upgrade_times: {
        activated_at: number;
        expected_at: number;
    }[];
}, false>

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themselves may not be registered anymore, but we also keep their code on-chain for the same amount of time as outdated code to keep it available for approval checkers.