public String toString()
    {
        return new StringBuilder()
                .append('{')
                .append("name:").append(name)
                .append(',').append("values:").append(values)
                .append('}')
                .toString();
    }
Disabled by default (the earlier protoc 2.x versions enabled this by default, but was changed later on).
protostuff-parser/src/main/java/io/protostuff/parser/EnumGroup.java