code: public static BitSet getSwitchGroupAddress(String address) {
          if (address.length() != 5) {
              throw new IllegalArgumentException("the switchGroupAddress must consist of exactly 5 bits!");
          }
          BitSet bitSet = new BitSet(5);
          for (int i = 0; i < 5; i++) {
              bitSet.set(i, address.charAt(i) == '1');
          }
          return bitSet;
      }
docs: convenient method to convert a string like "11011" to a BitSet.
  
  @param address the string representation of the rc address
  @return a bitset containing the address that can be used for
  switchOn()/switchOff()