code: @Nullable
    public static VATINStructure getFromVATINCountry (@Nullable final String sVATIN)
    {
      if (StringHelper.getLength (sVATIN) >= 2)
      {
        final String sCountry = sVATIN.substring (0, 2);
        for (final VATINStructure aStructure : s_aList)
          if (aStructure.getExamples ().get (0).substring (0, 2).equalsIgnoreCase (sCountry))
            return aStructure;
      }
      return null;
    }
docs: Resolve the VATIN structure only from the country part of the given VATIN.
  This should help indicate how the VATIN is valid.
  
  @param sVATIN
  The VATIN with at least 2 characters for the country code.
  @return <code>null</code> if the passed string is shorter than 2 characters
  or if the passed VATIN country code is invalid/unknown.