function deposit(address token, uint256 amount)
    external
    override
    whenNotPaused
    onlyAuth(token)
    nonReentrant
    returns (bool)
{
    ...

    bool remaining = true;
    if (isMarketSupported(token)) {
        ...
    }

    if (remaining) {
        poolToken.safeTransferFrom(msg.sender, address(this), amount);
    }

    ...
}
if (remaining) {
    poolToken.safeTransferFrom(msg.sender, address(this), amount);
}
function withdraw(
    address token,
    address account,
    uint256 amount
) external override whenNotPaused nonReentrant onlyAuth(token) returns (bool) {
    ...

    if (isMarketSupported(token)) {
        ...
    }

    if (!_isUToken(msg.sender, token)) {
        balances[msg.sender][token] = balances[msg.sender][token] - amount + remaining;
        totalPrincipal[token] = totalPrincipal[token] - amount + remaining;
    }

    emit LogWithdraw(token, account, amount, remaining);

    return true;
}
