text: public override string ToString(){StringBuilder buffer = new StringBuilder();buffer.Append("<sortedset" + ": \"").Append(Field).Append("\">");if (IsReverse) buffer.Append('!');if (MissingValue != null){buffer.Append(" missingValue=");buffer.Append(MissingValue);}buffer.Append(" selector=");buffer.Append(selector);return buffer.ToString();}