void outputting_properties_generator::
populate(const unsigned int position, result_type& v) {
    v.force_write(create_bool(position + 0));
    v.delete_extra_files(create_bool(position + 1));
    v.ignore_files_matching_regex(create_std_vector_std_string(position + 2));
    v.delete_empty_directories(create_bool(position + 3));
}