code: public static BitSet bitwiseNegate(BitSet self) {
          BitSet result = (BitSet) self.clone();
          result.flip(0, result.size() - 1);
          return result;
      }
docs: Bitwise NEGATE a BitSet.
  
  @param self a BitSet
  @return the bitwise NEGATE of the BitSet
  @since 1.5.0