Webiny\Component\Storage\Driver\AmazonS3\S3StorageDriver::setContents PHP Method

    public function setContents($key, $contents, $append = false)
    {
        $this->recentKey = $key;
        $params = ['ACL' => 'public-read'];
        if (is_array($this->meta)) {
            $params['Metadata'] = $this->meta;
        }
        $this->recentFiles[$key] = $this->s3Client->putObject($this->bucket, $key, $contents, $params);
        return true;
    }