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 }