text: public override string ToQueryString(IEscapeQuerySyntax escapeSyntaxParser){var children = GetChildren();if (children == null || children.Count == 0)return "";StringBuilder sb = new StringBuilder();string filler = "";foreach (IQueryNode child in children){sb.Append(filler).Append(child.ToQueryString(escapeSyntaxParser));filler = ",";}return "[MTP[" + sb.ToString() + "]]";}