code: public final String formatRfc3966(final String pphoneNumber, final String pcountryCode) {
      return this.formatRfc3966(this.parsePhoneNumber(pphoneNumber, pcountryCode));
    }
docs: format phone number in RFC 3966 format.
  
  @param pphoneNumber phone number to format
  @param pcountryCode iso code of country
  @return formated phone number as String