ModContainer

public class ModContainer extends Container {
    private IInventory lowerChestInventory;
    private int rows;
    private final ModTileEntity tileEntity;
    public ModTileEntity getTileEntity() { return this.tileEntity; }
    private BlockPos blockPos;
    public BlockPos getBlockPos() {
        return this.blockPos;
    }
    private int containerInd;
    public int getContainerInd() {
        return this.containerInd;
    }

    public void setBlockPos(ModTileEntity modTileEntity) {
        BlockPos blockPos1 = modTileEntity.getBlockPos();
        if (blockPos1 != null) {
            System.out.println("Working?");
            int containerInd1 = modTileEntity.getCapability(ModTeIDProvider.MOD_TE_ID).orElseThrow(
                    () -> new IllegalArgumentException("LazyOptional cannot be empty!")).get()[3];
            modTileEntity.getCapability(ModTeIDProvider.MOD_TE_ID).ifPresent(iModTag -> iModTag.set(new int[]{blockPos1.getX(), blockPos1.getY(), blockPos1.getZ(), containerInd1}));
        }
    }

    public ModContainer(int id, PlayerInventory playerInventory) {
        this(ModContainerTypes2.MULTI_9X3, id, playerInventory, 3);
    }

    private ModContainer(ContainerType<?> type, int id, PlayerInventory playerInventory, int rows) {
        this(type, id, playerInventory, new Inventory(9 * rows), rows);
    }

    public ModContainer(ContainerType<?> type, int id, PlayerInventory playerInventory, IInventory iinventory, int rows) {
        super(type, id);
        this.tileEntity = new ModTileEntity();
        createInventory(playerInventory, iinventory, this.tileEntity, rows);
    }


    public ModContainer(int id, PlayerInventory playerInventory, ModTileEntity modTileEntity) {
        this(ModContainerTypes2.MULTI_9X3, id, playerInventory, modTileEntity, 3);
    }

    private ModContainer(ContainerType<?> type, int id, PlayerInventory playerInventory, ModTileEntity modTileEntity, int rows) {
        this(type, id, playerInventory, new Inventory(9 * rows), modTileEntity, rows);
    }

    public ModContainer(ContainerType<?> type, int id, PlayerInventory playerInventory, IInventory iinventory, ModTileEntity modTileEntity, int rows) {
        super(type, id);
        this.tileEntity = modTileEntity;
        System.out.println("TileEntity: " + modTileEntity);
        createInventory(playerInventory, iinventory, this.tileEntity, rows);
    }


    public void createInventory(PlayerInventory playerInventory, IInventory iinventory, ModTileEntity modTileEntity, int rows) {
        assertInventorySize(iinventory, rows * 9);
        this.lowerChestInventory = iinventory;
        iinventory.openInventory(playerInventory.player);

        this.containerInd = modTileEntity.getContainerInd();
        this.blockPos = modTileEntity.getBlockPos();
        System.out.println("BlockPos container: " + this.blockPos);
        setBlockPos(modTileEntity);

        this.rows = rows;
        int i = (this.rows - 4) * 18;

        for(int j = 0; j < this.rows; ++j) {
            for(int k = 0; k < 9; ++k) {
                this.addSlot(new Slot(iinventory, k + j * 9, 8 + k * 18, 19 + j * 18));
            }
        }
        for(int l = 0; l < 3; ++l) {
            for(int j1 = 0; j1 < 9; ++j1) {
                this.addSlot(new Slot(playerInventory, j1 + l * 9 + 9, 8 + j1 * 18, 122 + l * 18 + i));
            }
        }
        for(int i1 = 0; i1 < 9; ++i1) {
            this.addSlot(new Slot(playerInventory, i1, 8 + i1 * 18, 180 + i));
        }
    }

    public boolean canInteractWith(PlayerEntity playerIn) {
        return this.lowerChestInventory.isUsableByPlayer(playerIn);
    }

    public ItemStack transferStackInSlot(PlayerEntity playerIn, int index) {
        ItemStack itemstack = ItemStack.EMPTY;
        Slot slot = this.inventorySlots.get(index);

        if (slot != null && slot.getHasStack()) {
            ItemStack itemstack1 = slot.getStack();
            itemstack = itemstack1.copy();

            if (index < this.rows * 9) {
                if (!this.mergeItemStack(itemstack1, this.rows * 9, this.inventorySlots.size(), true)) {
                    return ItemStack.EMPTY;
                }
            } else if (!this.mergeItemStack(itemstack1, 0, this.rows * 9, false)) {
                return ItemStack.EMPTY;
            }
            if (itemstack1.isEmpty()) {
                slot.putStack(ItemStack.EMPTY);
            } else {
                slot.onSlotChanged();
            }
        }
        return itemstack;
    }

    public void onContainerClosed(PlayerEntity playerIn) {
        super.onContainerClosed(playerIn);
        this.lowerChestInventory.closeInventory(playerIn);
    }

    public IInventory getLowerChestInventory() {
        return this.lowerChestInventory;
    }
}