/// <summary>
 /// Adds new table to the end of table list.
 /// </summary>
 /// <param name="title">Table's title (optional, "" by default).</param>
 /// <returns></returns>
 public TableResultBuilder NewTable(string title = "")
 {
     currentTable = new TableResultItem(title);
     tableResult.ResultItems.Add(currentTable);
     return this;
 }
 /// <summary>
 /// Sets given table as current table.
 /// </summary>
 /// <param name="table">Given table.</param>
 /// <returns></returns>
 public TableResultBuilder SetCurrentTable(TableResultItem table)
 {
     currentTable = table;
     return this;
 }