@Override
    public List<String> getSuggestions(CommandInvocation invocation)
    {
        List<String> result = new ArrayList<>();
        Class completerClass = parameter.getProperty(Properties.COMPLETER);
        if (completerClass == null)
        {
            completerClass = parameter.getType();
        }

        Completer completer = invocation.getManager().getCompleter(completerClass);
        if (completer != null)
        {
            result.addAll(completer.getSuggestions(invocation));
        }
        else
        {
            System.out.println("No completer found for " + completerClass);
        }
        return result;
    }