protected function setCellLocation()
{
$id = $this->xml->id->__toString();
preg_match("@/R(\\d+)C(\\d+)@", $id, $matches);
if (count($matches) !== 3) {
throw new Exception("Filed to get the location of the cell");
}
$this->row = (int) $matches[1];
$this->column = (int) $matches[2];
}