}
default @Nonnull PrefixStatement getPrefix() {
- final Optional<PrefixStatement> opt = findFirstDeclaredSubstatement(PrefixStatement.class);
- return opt.isPresent() ? opt.get() : null;
+ return findFirstDeclaredSubstatement(PrefixStatement.class).get();
}
default @Nullable RevisionDateStatement getRevisionDate() {