CoreSchedules: StorageDescriptor<[Key: FixedSizeArray<2, number>], {
    assignments: [BrokerCoretimeInterfaceCoreAssignment, number][];
    end_hint?: number;
    next_schedule?: number;
}, true>

Scheduled assignment sets.

Assignments as of the given block number. They will go into state once the block number is reached (and replace whatever was in there before).