in src/main/java/org/apache/commons/cli/DefaultParser.java [274:285]
private List<String> getMatchingLongOptions(final String token) {
if (allowPartialMatching) {
return options.getMatchingOptions(token);
}
final List<String> matches = new ArrayList<>(1);
if (options.hasLongOption(token)) {
final Option option = options.getOption(token);
matches.add(option.getLongOpt());
}
return matches;
}