lib/PHPExif/Adapter/Native.php
public function addRequiredSection($section)
    {
        if (!in_array($section, $this->requiredSections)) {
            array_push($this->requiredSections, $section);
        }

        return $this;
    }
public function addRequiredSection($section)
    {
        if (!in_array($section, $this->requiredSections)) {
            array_push($this->requiredSections, $section);
        }

        return $this;
    }
Adds an EXIF section to the list

@param string $section
@return \PHPExif\Adapter\Native Current instance for chaining