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