code: public Object remove(Object key)
     {
        CompressedISPNChangesBuffer changesContainer = getChangesBufferSafe();
        changesContainer.add(new RemoveObjectContainer((CacheKey)key, parentCache, changesContainer.getHistoryIndex(),
           local.get(), allowLocalChanges));
  
        // return null as we never used result
        return null;
     }
docs: {@inheritDoc}