/**
     * A read-only projection for OptionDescriptor details relevant for the help task.
     */
    public static class OptionDetails {
        private final String name;

        private final String description;

        private final Set<String> availableValues;
        public OptionDetails(String name, String description, Set<String> availableValues) {
            this.name = name;
            this.description = description;

                output.println();
            }
        }
    }

    private Map<String, Set<String>> optionToAvailableValues(List<TaskDetails.OptionDetails> allOptions) {
        Map<String, Set<String>> result = new LinkedHashMap<>();
        for (TaskDetails.OptionDetails optionDescriptor : allOptions) {
            if (result.containsKey(optionDescriptor.getName())) {