Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Style/Protection.php
public function setLocked($pValue)
    {
        if ($this->isSupervisor) {
            $styleArray = $this->getStyleArray(['locked' => $pValue]);
            $this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
        } else {
            $this->locked = $pValue;
        }

        return $this;
    }
public function setLocked($pValue)
    {
        if ($this->isSupervisor) {
            $styleArray = $this->getStyleArray(['locked' => $pValue]);
            $this->getActiveSheet()->getStyle($this->getSelectedCells())->applyFromArray($styleArray);
        } else {
            $this->locked = $pValue;
        }

        return $this;
    }
Set locked.

@param string $pValue see self::PROTECTION_*

@return Protection