sysvarEpochSchedulePubkey top-level property
The EpochSchedule sysvar contains epoch scheduling constants that are set in genesis, and enables calculating the number of slots in a given epoch, the epoch for a given slot, etc.
Implementation
final Pubkey sysvarEpochSchedulePubkey = Pubkey.fromBase58(
'SysvarEpochSchedu1e111111111111111111111111',
);