A list of all possible Countries. Conforms to ISO 3166-1

enum Country {
  AFGHANISTAN
  ALAND_ISLANDS
  ALBANIA
  ALGERIA
  AMERICAN_SAMOA
  ANDORRA
  ANGOLA
  ANGUILLA
  ANTARCTICA
  ANTIGUA_AND_BARBUDA
  ARGENTINA
  ARMENIA
  ARUBA
  AUSTRALIA
  AUSTRIA
  AZERBAIJAN
  BAHAMAS
  BAHRAIN
  BANGLADESH
  BARBADOS
  BELARUS
  BELGIUM
  BELIZE
  BENIN
  BERMUDA
  BHUTAN
  BOLIVIA_PLURINATIONAL_STATE_OF
  BONAIRE_SINT_EUSTATIUS_AND_SABA
  BOSNIA_AND_HERZEGOVINA
  BOTSWANA
  BOUVET_ISLAND
  BRAZIL
  BRITISH_INDIAN_OCEAN_TERRITORY_THE
  BRUNEI_DARUSSALAM
  BULGARIA
  BURKINA_FASO
  BURUNDI
  CABO_VERDE
  CAMBODIA
  CAMEROON
  CANADA
  CAYMAN_ISLANDS
  CENTRAL_AFRICAN_REPUBLIC
  CHAD
  CHILE
  CHINA
  CHRISTMAS_ISLAND
  COCOS_KEELING_ISLANDS
  COLOMBIA
  COMOROS
  CONGO
  CONGO_THE_DEMOCRATIC_REPUBLIC_OF
  COOK_ISLANDS
  COSTA_RICA
  COTE_D_IVOIRE
  CROATIA
  CUBA
  CURACAO
  CYPRUS
  CZECHIA
  DENMARK
  DJIBOUTI
  DOMINICA
  DOMINICAN_REPUBLIC
  ECUADOR
  EGYPT
  EL_SALVADOR
  EQUATORIAL_GUINEA
  ERITREA
  ESTONIA
  ESWATINI
  ETHIOPIA
  FALKLAND_ISLANDS_THE_MALVINAS
  FAROE_ISLANDS
  FIJI
  FINLAND
  FRANCE
  FRENCH_GUIANA
  FRENCH_POLYNESIA
  FRENCH_SOUTHERN_TERRITORIES
  GABON
  GAMBIA
  GEORGIA
  GERMANY
  GHANA
  GIBRALTAR
  GREECE
  GREENLAND
  GRENADA
  GUADELOUPE
  GUAM
  GUATEMALA
  GUERNSEY
  GUINEA
  GUINEA_BISSAU
  GUYANA
  HAITI
  HEARD_ISLAND_AND_MCDONALD_ISLANDS
  HOLY_SEE
  HONDURAS
  HONG_KONG
  HUNGARY
  ICELAND
  INDIA
  INDONESIA
  IRAN
  IRAQ
  IRELAND
  ISLE_OF_MAN
  ISRAEL
  ITALY
  JAMAICA
  JAPAN
  JERSEY
  JORDAN
  KAZAKHSTAN
  KENYA
  KIRIBATI
  KOREA_NORTH
  KOREA_SOUTH
  KUWAIT
  KYRGYZSTAN
  LAO_PEOPLES_DEMOCRATIC_REPUBLIC_THE
  LATVIA
  LEBANON
  LESOTHO
  LIBERIA
  LIBYA
  LIECHTENSTEIN
  LITHUANIA
  LUXEMBOURG
  MACAO
  MADAGASCAR
  MALAWI
  MALAYSIA
  MALDIVES
  MALI
  MALTA
  MARSHALL_ISLANDS
  MARTINIQUE
  MAURITANIA
  MAURITIUS
  MAYOTTE
  MEXICO
  MICRONESIA_FEDERATED_STATES
  MINOR_OUTLYING_ISLANDS_US
  MOLDOVA_THE_REPUBLIC
  MONACO
  MONGOLIA
  MONTENEGRO
  MONTSERRAT
  MOROCCO
  MOZAMBIQUE
  MYANMAR
  NAMIBIA
  NAURU
  NEPAL
  NETHERLANDS
  NEW_CALEDONIA
  NEW_ZEALAND
  NICARAGUA
  NIGER
  NIGERIA
  NIUE
  NORFOLK_ISLAND
  NORTH_MACEDONIA
  NORTHERN_MARIANA_ISLANDS
  NORWAY
  OMAN
  PAKISTAN
  PALAU
  PALESTINE_STATE
  PANAMA
  PAPUA_NEW_GUINEA
  PARAGUAY
  PERU
  PHILIPPINES
  PITCAIRN
  POLAND
  PORTUGAL
  PUERTO_RICO
  QATAR
  REUNION
  ROMANIA
  RUSSIA
  RWANDA
  SAINT_BARTHELEMY
  SAINT_HELENA_ASCENSION_AND_TRISTAN_DA_CUNHA
  SAINT_KITTS_AND_NEVIS
  SAINT_LUCIA
  SAINT_MARTIN_FRENCH_PART
  SAINT_PIERRE_AND_MIQUELON
  SAINT_VINCENT_AND_THE_GRENADINES
  SAMOA
  SAN_MARINO
  SAO_TOME_AND_PRINCIPE
  SAUDI_ARABIA
  SENEGAL
  SERBIA
  SEYCHELLES
  SIERRA_LEONE
  SINGAPORE
  SINT_MAARTEN_DUTCH_PART
  SLOVAKIA
  SLOVENIA
  SOLOMON_ISLANDS
  SOMALIA
  SOUTH_AFRICA
  SOUTH_GEORGIA_AND_THE_SOUTH_SANDWICH_ISLANDS
  SOUTH_SUDAN
  SPAIN
  SRI_LANKA
  SUDAN
  SURINAME
  SVALBARD_AND_JAN_MAYEN
  SWEDEN
  SWITZERLAND
  SYRIA
  TAIWAN
  TAJIKISTAN
  TANZANIA
  THAILAND
  TIMOR_LESTE
  TOGO
  TOKELAU
  TONGA
  TRINIDAD_AND_TOBAGO
  TUNISIA
  TURKEY
  TURKMENISTAN
  TURKS_AND_CAICOS_ISLANDS
  TUVALU
  UGANDA
  UKRAINE
  UNITED_ARAB_EMIRATES
  UNITED_KINGDOM
  UNITED_STATES_OF_AMERICA
  URUGUAY
  UZBEKISTAN
  VANUATU
  VENEZUELA
  VIETNAM
  VIRGIN_ISLANDS_BRITISH
  VIRGIN_ISLANDS_US
  WALLIS_AND_FUTUNA
  WESTERN_SAHARA
  YEMEN
  ZAMBIA
  ZIMBABWE
}