System.Collections.Generic.List.Add(iCollectionViewCell)

private void PrepareCells(List<object> data, List<iCollectionViewCell> cells)
    {
        int totCells = Math.Min(TotalCellsNeeded, data.Count);

        int curIndex = (int)Math.Round(CurrentIndex);
        int min = curIndex - (totCells / 2);
        int max = curIndex + (totCells / 2);
        
        if(!IndexWrap)
        {
            if(min < 0)
            {
                min = 0;
                max = totCells;
            }
            else if (max >= data.Count)
            {
                max = data.Count;
                min = max - totCells;
            }
        }
        
        //GO through cells, any with an index we no longer need, turn off
        int minVal = (min < 0) ? min + data.Count : min;
        int maxVal = (max >= data.Count) ? max - data.Count : max;
        
        
        if (!IndexWrap) {
            if (max >= data.Count) {
                maxVal = data.Count - 1;
                minVal = maxVal - m_maxCells;
            }

            min = minVal;
            max = maxVal;
        }

        
        for(int i=0; i<cells.Count; i++)
        {
            iCollectionViewCell c = cells[i];
            c.Snap = false;

            //Bizzare annoyance,min and max can sometimes be the same, i.e. we have enough cells for all the data fine
            if(maxVal == minVal)
                continue;
            
            //If maxval is bigger than minval then just check were in the range
            if(maxVal > minVal && (c.Index <= maxVal && c.Index >= minVal))
                continue;
            
            //If min value is bigger than max were in a "wrap"
            if(minVal > maxVal && (c.Index >= minVal || c.Index <= maxVal))
                continue;
            c.SetActive(false);
            cells.Remove(c);
            i--;
        }
        
        //Go through cells, add any indices we need and set their data TODO - How to do this quickly?
        for(int i = min; i <= max; i++)
        {
            int index = i;
            //Wrap index
            if(index<0)
                index += data.Count;
            else if(index >= data.Count)
                index -= data.Count;
            
            //Check if we have htis index
            bool found = false;
			foreach(iCollectionViewCell cell in cells)
            {
                if(cell.Index == index)
                {
                    found = true;
                    //Set Data if null
                    if(cell.Data == null)
                        cell.SetData(data[index]);
                    break;
                }
            }
            
            if(!found)
            {

                //Add a new one
				iCollectionViewCell c = CellPoolService.Instance.CreateCell(NibInUse, gameObject);
                c.transform.localPosition = Vector3.zero;
                c.Index = index;
                c.Snap = true;
                c.SetData(data[index]);

                if(OnCellClick!=null)
                    c.OnClickEvent += OnCellClick;
                
                cells.Add(c);
            }
        }
    }

public iCollectionViewCell CreateCell(string nib, GameObject owner = null)
    {
        //Check we have nib registered
        if(!m_nibs.ContainsKey(nib))
            throw new UnityException(string.Format("No Prefab registered for {0}", nib));

        //Check pool
        if(m_pools.ContainsKey(nib))
        {
			List<iCollectionViewCell> pool = m_pools[nib];

            //Check for any not being used
			foreach(iCollectionViewCell cell in pool)
            {
                if(!cell.IsActive)
                {
                    cell.SetActive(true, owner);
                    return cell;
                }
            }

        }
        else
        {
            //Make Pool
			m_pools.Add(nib, new List<iCollectionViewCell>());
        }

        //No free cells, so make a new one
		iCollectionViewCell c = m_nibs[nib].CreateCell();
        c.SetActive(true, owner);

        m_pools[nib].Add(c);

        return c;
    }