@Override
    public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append(String.format("version: %s%n", version));
        builder.append("params: \n").append(StringUtils.indent(parameters.toString(), 2));
        builder.append("rules: \n");
        rules.forEach(rule -> builder.append(StringUtils.indent(rule.toString(), 2)));
        return builder.toString();
    }
Gets the version of this rule-set.

@return the rule-set version.
smithy-rules-engine/src/main/java/software/amazon/smithy/rulesengine/language/EndpointRuleSet.java