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- public Collection<Country> getAllCountries() {
- Set<Country> allCountries = new HashSet<Country>();
- for (Continent contEnum: Continent.values()) {
- if (continents.containsKey(contEnum)) {
- allCountries.addAll(continents.get(contEnum));
- }
- }
- return Collections.unmodifiableCollection(allCountries);
- }
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