code: public static int addAtomicToItemList(final INodeReadTrx pRtx, final AtomicValue pVal) {
          if (!atomics.containsKey(pRtx)) {
              atomics.put(pRtx, new ItemList());
          }
          return atomics.get(pRtx).addItem(pVal);
  
      }
docs: Adding any AtomicVal to any ItemList staticly.
  
  @param pRtx
  as key
  @param pVal
  to be added
  @return the index in the ItemList