/* TODO missing selector-field-range. */
member_class["selector-field-ranges"] = {{option.first.range.begin, option.first.range.end}};
option.second->accept(option_visitor);
/* TODO missing selector-field-range. */
member_class["selector-field-ranges"] = {{option.first.range.begin, option.first.range.end}};
option.second->accept(option_visitor);