System.util.ListIterator.Remove C# (CSharp) Method

        public void Remove() {
            if (lastRet == -1)
                throw new InvalidOperationException();
            col.RemoveAt(lastRet);
            if (lastRet < cursor)
                cursor--;
            lastRet = -1;
        }
    }

 protected void FillOCProperties(bool erase) {
     if (vOCProperties == null)
         vOCProperties = new PdfOCProperties();
     if (erase) {
         vOCProperties.Remove(PdfName.OCGS);
         vOCProperties.Remove(PdfName.D);
     }
     if (vOCProperties.Get(PdfName.OCGS) == null) {
         PdfArray gr = new PdfArray();
         foreach (PdfLayer layer in documentOCG.Keys) {
             gr.Add(layer.Ref);
         }
         vOCProperties.Put(PdfName.OCGS, gr);
     }
     if (vOCProperties.Get(PdfName.D) != null)
         return;
     List<IPdfOCG> docOrder = new List<IPdfOCG>(documentOCGorder);
     for (ListIterator<IPdfOCG> it = new ListIterator<IPdfOCG>(docOrder); it.HasNext();) {
         PdfLayer layer = (PdfLayer)it.Next();
         if (layer.Parent != null)
             it.Remove();
     }
     PdfArray order = new PdfArray();
     foreach (PdfLayer layer in docOrder) {
         GetOCGOrder(order, layer);
     }
     PdfDictionary d = new PdfDictionary();
     vOCProperties.Put(PdfName.D, d);
     d.Put(PdfName.ORDER, order);
     PdfArray grx = new PdfArray();
     foreach (PdfLayer layer in documentOCG.Keys) {
         if (!layer.On)
             grx.Add(layer.Ref);
     }
     if (grx.Size > 0)
         d.Put(PdfName.OFF, grx);
     if (OCGRadioGroup.Size > 0)
         d.Put(PdfName.RBGROUPS, OCGRadioGroup);
     if (OCGLocked.Size > 0)
         d.Put(PdfName.LOCKED, OCGLocked);
     AddASEvent(PdfName.VIEW, PdfName.ZOOM);
     AddASEvent(PdfName.VIEW, PdfName.VIEW);
     AddASEvent(PdfName.PRINT, PdfName.PRINT);
     AddASEvent(PdfName.EXPORT, PdfName.EXPORT);
     d.Put(PdfName.LISTMODE, PdfName.VISIBLEPAGES);
 }