code: @Override
  	protected void addSlot(MalisisSlot slot, int number)
  	{
  		UISlot uislot = new UISlot(slot);
  		if (number < 9)
  			uislot.setPosition(Position.of(number * 18, 69));
  		else if (number < 36)
  		{
  			int row = (number - 9) / 9;
  			int col = number % 9;
  			uislot.setPosition(Position.of(col * 18, 11 + row * 18));
  		}
  		else
  			return;
  
  		add(uislot);
  	}
docs: Creates and adds <code>UISlot</code> into this <code>UIPlayerInventory</code>.
  
  @param slot the slot
  @param number the number