Arkade\S3\Model\MediaStorage\File\Storage\S3::loadByFilename PHP Method

    public function loadByFilename($filename)
    {
        $fail = false;
        try {
            $object = $this->client->getObject(['Bucket' => $this->getBucket(), 'Key' => $filename]);
            if ($object['Body']) {
                $this->setData('id', $filename);
                $this->setData('filename', $filename);
                $this->setData('content', (string) $object['Body']);
            } else {
                $fail = true;
            }
        } catch (S3Exception $e) {
            $fail = true;
        }
        if ($fail) {
            $this->unsetData();
        }
        return $this;
    }