This contract serves as the storage for checkpoints in the system.
struct EscrowDelegateCheckpoints.EscrowDelegateStore edStoreStorage struct for the checkpoint system
uint256 MAX_TIMEfunction globalSlopeChanges(uint256 _timestamp) external view returns (int128)function delegateeSlopeChanges(address _delegatee, uint256 _timestamp) external view returns (int128)function toGlobalClock(uint256 _timestamp) public pure virtual returns (uint48)