// Line-of-Credit/contracts/utils/EscrowLib.sol
    function addCollateral(EscrowState storage self, address oracle, uint256 amount, address token) {
        // ...
        LineLib.receiveTokenOrETH(token, msg.sender, amount);

        self.deposited[token].amount += amount;
        // ...
    }

    function _getCollateralValue(EscrowState storage self, address oracle) public returns (uint256) {
            // ...
            d = self.deposited[token];
                // ...
                collateralValue += CreditLib.calculateValue(
                  o.getLatestAnswer(d.asset),
                  deposit,
                  d.assetDecimals
                );
            // ...
    }

// Line-of-Credit/contracts/modules/credit/LineOfCredit.sol
    function increaseCredit(bytes32 id, uint256 amount) {
        // ...
        Credit memory credit = credits[id];
        credit = _accrue(credit, id);

        credit.deposit += amount;
        
        credits[id] = credit;

        LineLib.receiveTokenOrETH(credit.token, credit.lender, amount);

        // ...
    }

    function _close(Credit memory credit, bytes32 id) internal virtual returns (bool) {
        // ...
        if (credit.deposit + credit.interestRepaid > 0) {
            LineLib.sendOutTokenOrETH(
                credit.token,
                credit.lender,
                credit.deposit + credit.interestRepaid
            );
        }
