_vestings[_beneficiary].releaseRate =
                (_vestings[_beneficiary].totalAmount - _vestings[_beneficiary].amountClaimed) /
                (numOfSteps - _vestings[_beneficiary].stepsClaimed);
    struct Listing {
        address seller;
        uint256 total;
        uint256 balance;
        uint256 pricePerUnit;
        ListingType listingType;
        DiscountType discountType;
        uint256 discountPct;
        uint256 listTime;
+      uint256 lastStepsClaimedSeller;
        address whitelist;
        uint256 minPurchaseAmt;
        Status status;
        address currency;
        address vestingPlan;
    }
struct Vesting {
        uint256 stepsClaimed;
        uint256 amountClaimed;
        uint256 releaseRate;
        uint256 totalAmount;
+      uint256 claimableAmount;
    }
