public Set<E> toPlainSet() {
      HashSet<E> set = new HashSet<>();

      int[] intdata = data;

      int size = data.length * 32;
      if (size > colValuesInternal.size()) {
        size = colValuesInternal.size();
      }

      for (int i = size - 1; i >= 0; i--) {
        int[] index = colValuesInternal.get(i);

        if ((intdata[index[0]] & index[1]) != 0) {
          set.add(colValuesInternal.getKey(i));
        }
      }

      return set;
    }
public Set<E> toPlainSet()