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    function _decreasePosition(address _account, address _collateralToken, address _indexToken, uint256 _collateralDelta, uint256 _sizeDelta, bool _isLong, address _receiver, uint256 _price) internal returns (uint256) {
        address _vault = vault;

        if (_isLong) {
            require(IVault(_vault).getMinPrice(_indexToken) >= _price, "BasePositionManager: mark price lower than limit");
        } else {
            require(IVault(_vault).getMaxPrice(_indexToken) <= _price, "BasePositionManager: mark price higher than limit");
        }

        address timelock = IVault(_vault).gov();

        ITimelock(timelock).enableLeverage(_vault);
        uint256 amountOut = IRouter(router).pluginDecreasePosition(_account, _collateralToken, _indexToken, _collateralDelta, _sizeDelta, _isLong, _receiver);
        ITimelock(timelock).disableLeverage(_vault);

        _emitDecreasePositionReferral(_account, _sizeDelta);

        return amountOut;
    }