public override string ToString(){StringBuilder sb = new StringBuilder();sb.Append("[SXPI]\n");for (int i = 0; i < _fieldInfos.Length; i++){sb.Append("    item[").Append(i).Append("]=");_fieldInfos[i].AppendDebugInfo(sb);sb.Append('\n');}sb.Append("[/SXPI]\n");return sb.ToString();}