     function openBorrowPosition(uint256 marketId, uint256 _amountWei, uint256 accountId)
            public
            onlyManager
            nonReentrant
        {
            address token = dolomiteMargin.getMarketTokenAddress(marketId);

            if (!registry.isTokenTrusted(vaultId, token, address(this))) {
                revert IConnector_UntrustedToken(token);
            }
            // borrow
            borrowPositionProxy.openBorrowPosition(
                0, accountId, marketId, _amountWei, AccountBalanceHelper.BalanceCheckFlag.None
            );
            registry.updateHoldingPosition(
                vaultId, registry.calculatePositionId(address(this), DOL_POSITION_ID, ""), abi.encode(accountId), "", true
            );
        }
     function withdraw(uint256 marketId, uint256 _amount) public onlyManager nonReentrant {
            address token = dolomiteMargin.getMarketTokenAddress(marketId);
            depositWithdrawalProxy.withdrawWeiFromDefaultAccount(
                marketId, _amount, AccountBalanceHelper.BalanceCheckFlag.None
            );
            // Update token
            _updateTokenInRegistry(token);
            (uint256[] memory markets,,,) = dolomiteMargin.getAccountBalances(Info(address(this), 0));
            if (markets.length == 0) {
                registry.updateHoldingPosition(
                    vaultId, registry.calculatePositionId(address(this), DOL_POSITION_ID, ""), abi.encode(0), "", true
                );
            }
        }
     function closeBorrowPosition(uint256[] memory marketIds, uint256 accountId) public onlyManager nonReentrant {
            // repay
            borrowPositionProxy.closeBorrowPosition(accountId, 0, marketIds);
            registry.updateHoldingPosition(
                vaultId, registry.calculatePositionId(address(this), DOL_POSITION_ID, ""), abi.encode(accountId), "", true
            );
        }
      if (positionIndex == 0 && removePosition) return type(uint256).max;
     bytes32 holdingPositionId = keccak256(abi.encode(msg.sender, _positionId, _data));
     uint256 positionIndex = vault.isPositionUsed[holdingPositionId];
    return
                updateHoldingPosition(vault, vaultId, _positionId, _data, additionalData, positionIndex, holdingPositionId);
