How to calculate On Hand Stock of an item given the InventLocationId that shown on the on hand form D365O (AX7)

Hi,

How to calculate On Hand Stock of an item given the InventLocationId that shown on the on hand form D365O (AX7) 

 InventDimParm       invDimParm; InventDim           invDim;   Qty                 availPhys;   ;   invDim.InventLocationId = 'INVENTLOCATIONID';   invDim = InventDim::findOrCreate(invDim);   invDimParm.initFromInventDim(InventDim::find(invDim.inventDimId));   availPhys = InventSum::findSum("ITEMID",invDim,invDimParm).availPhysical();   info(strfmt("availPhys:%1 ",availPhys));

OR

 InventDim           inventDim;

   InventDimParm       inventDimParm;

   InventOnhand        inventOnhand;

   ;

   inventDim.InventLocationId = 'Yourwarehouse';

   inventDimParm.initFromInventDim(inventDim);

   inventOnhand = InventOnhand::newParameters('Youritem', inventDim, inventDimParm);

   info(strfmt("Available Physical: %1", inventOnhand.availPhysical()));

OR

 InventIAvailability inventAvailability = InventAvailabilityProvider::findBySumDim(_inventSum, _inventDim).parmInventAvailability();

        inventOnhandTmp.ItemId          = _inventSum.ItemId;
        inventOnhandTmp.Deducted        = _inventSum.Deducted;
        inventOnhandTmp.Ordered         = _inventSum.Ordered;
        inventOnhandTmp.PostedQty       = _inventSum.PostedQty;
        inventOnhandTmp.Received        = _inventSum.Received;
        inventOnhandTmp.AvailOrdered    = inventAvailability.availTotal();
        inventOnhandTmp.AvailPhysical   = inventAvailability.availPhysical();
        inventOnhandTmp.ReservOrdered   = inventAvailability.reservOrdered();
        inventOnhandTmp.ReservPhysical  = inventAvailability.reservPhysical();

OR

For WHS Enabled Items (Warehouse Enabled Items) On Hand Stock

 if(inventSum.isItemWHSEnabled())
            {
                    WHSInventReserveQty ret = null;
                    InventDimParm       inventDimParm;
                    InventDim           inventDimCriteria=inventDim::find(inventDim.inventDimId);
                    inventDimCriteria.data(inventSum.relatedTable(tableStr(InventDim)));
                    inventTable = InventTable::find(inventSum.ItemId);
                    inventDimCriteria = InventDim::findOrCreate(inventDimCriteria);
                    inventDimParm.initFromInventDim(inventDimCriteria);
                
                    ret = WHSInventReserveQty::newFromParms(
                        inventTable,
                        inventDimCriteria,
                        inventDimParm,
                       inventSum);

                    inventOnhandTmp.availPhysical=ret.availPhysical();
                    inventOnhandTmp.reservPhysical=ret.reservPhysical ();
            }
            else
            {
                inventOnhandTmp.availPhysical=inventSum.AvailPhysical ;
                inventOnhandTmp.reservPhysical=inventSum.ReservPhysical ;
            }

Reference