function createVirtualTable() {
    const rows = domTable.rows;
    for (let rowIndex = 0; rowIndex < rows.length; rowIndex++) {
      const cells = rows[rowIndex].cells;
      for (let cellIndex = 0; cellIndex < cells.length; cellIndex++) {
        addCellInfoToVirtual(rows[rowIndex], cells[cellIndex]);
      }
    }
  }
Create virtual table of cells with all cells, including span cells.