code: public int getTrailingBitCount(boolean network) {
  		int count = getDivisionCount();
  		if(count == 0) {
  			return 0;
  		}
  		long back = network ? 0 : getDivision(0).getMaxValue();
  		int bitLen = 0;
  		for(int i = count - 1; i >= 0; i--) {
  			IPAddressDivision seg = getDivision(i);
  			long value = seg.getDivisionValue();
  			if(value != back) {
  				return bitLen + seg.getTrailingBitCount(network);
  			}
  			bitLen += seg.getBitCount();
  		}
  		return bitLen;
  	}
docs: Returns the number of consecutive trailing one or zero bits.
  If network is true, returns the number of consecutive trailing zero bits.
  Otherwise, returns the number of consecutive trailing one bits.
  
  @param network
  @return