static public StringBuilder Serialize(StringBuilder sb, column_update cu)
 {
     sb.Append(TypeColumnUpdate);
     Serialize(sb, cu.name);
     SerializeValue(sb, cu.value);
     sb.Append(' ');
     return sb;
 }
 private bool FilterLoops(column_update[] columns)
 {
     for (int i = 0; i < columns.Length; i++)
     {
         if (columns[i].name == "TableId")
         {
             if (((string)columns[i].value).StartsWith(PeerTableIdPrefix))
                 return true;
         }
     }
     return false;
 }