code: public boolean isZeroVATAllowed (@Nonnull final Locale aCountry, final boolean bUndefinedValue)
    {
      ValueEnforcer.notNull (aCountry, "Country");
  
      // first get locale specific VAT types
      final VATCountryData aVATCountryData = getVATCountryData (aCountry);
      return aVATCountryData != null ? aVATCountryData.isZeroVATAllowed () : bUndefinedValue;
    }
docs: Check if zero VAT is allowed for the passed country
  
  @param aCountry
  The country to be checked.
  @param bUndefinedValue
  The value to be returned, if no VAT data is available for the passed
  country
  @return <code>true</code> or <code>false</code>