Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Worksheet/HeaderFooterDrawing.php
public function getHashCode()
    {
        return md5(
            $this->getPath() .
            $this->name .
            $this->offsetX .
            $this->offsetY .
            $this->width .
            $this->height .
            __CLASS__
        );
    }
public function getHashCode()
    {
        return md5(
            $this->getPath() .
            $this->name .
            $this->offsetX .
            $this->offsetY .
            $this->width .
            $this->height .
            __CLASS__
        );
    }
Get hash code.

@return string Hash code