docs: public Integer getNetworkPrefixLength() {
  		if(isAddress()) {
  			return parsedHost.asAddress().getNetworkPrefixLength();
  		} else if(isAddressString()) {
  			return parsedHost.asGenericAddressString().getNetworkPrefixLength();
  		}
  		return isValid() ? parsedHost.getNetworkPrefixLength() : null;
  	}