bool InvalidationWatcher::CheckInvalidation(const Column& column)
{
   int invalidation_count = column.GetInvalidated();
   int x = column.GetX();
   int z = column.GetZ();
   if(invalidation_count > mInvalidationCounters[x][z])
   {
      mInvalidationCounters[x][z] = invalidation_count;
      return true;
   }
   return false;
}