code: @Override
  	public BigInteger getCount() {
  		BigInteger cached = cachedCount;
  		if(cached == null) {
  			cachedCount = cached = getCountImpl();
  		}
  		return cached;
  	}
docs: gets the count of addresses that this address division grouping may represent
  
  If this address division grouping is not a subnet block of multiple addresses or has no range of values, then there is only one such address.
  
  @return