}
@Override
public boolean getAllPossibleValues(final List<Completion> completions, final Class<?> requiredType,
final String existingData, final String optionContext, final MethodTarget target) {
completions.add(new Completion("true"));
completions.add(new Completion("false"));
completions.add(new Completion("yes"));
completions.add(new Completion("no"));
completions.add(new Completion("1"));
completions.add(new Completion("0"));
return false;
}