To iterate over the true bits in a BitSet, use the following loop:
   * <pre>
   * <code>
   *  for (long i = bs.nextSetBit(0, sizeInWords); i &gt;= 0; i = bs.nextSetBit(i + 1, sizeInWords)) {
   *    // operate on index i here
   *  }
To iterate over the true bits in a BitSet, use the following loop:
   * <pre>
   * <code>
   *  for (long i = bs.nextSetBit(0, sizeInWords); i &gt;= 0; i = bs.nextSetBit(i + 1, sizeInWords)) {
   *    // operate on index i here
   *  } | BitSetMethods.java