in commons-rdf-simple/src/main/java/org/apache/commons/rdf/simple/Types.java [297:308]
public static Optional<IRI> get(final IRI nextIRI) {
if (ALL_TYPES.contains(nextIRI)) {
// If we know about this IRI, then look through our set to find the
// object that matches and return it
for (final IRI nextType : ALL_TYPES) {
if (nextType.equals(nextIRI)) {
return Optional.of(nextType);
}
}
}
return Optional.empty();
}