CakePHP image upload component - cakephp

Question

I would like to know how I can improve this CakePHP 3.0 Component (inside folder controller)
1st: to use external libs (stored on vendor folder) I'm using the require keyword and include the class using use keyword, like this:
require_once(ROOT . DS . 'vendor' . DS . 'CakePHP-ImageTool-Component' . DS . 'ImageTool.php');
and
use ImageTool;
How I can put this on CakePHP 3 pattern ?
2nd: in method saveFileLFS I'm using true or false to flag OK.
How I can improve this check ?
<?php
namespace App\Controller\Component;
require_once(ROOT . DS . 'vendor' . DS . 'CakePHP-ImageTool-Component' . DS . 'ImageTool.php');
use Burzum\FileStorage\Lib\StorageManager;
use Cake\Controller\Component;
use ImageTool;
class UploadFileComponent extends Component
{
function resizeImage($settings)
{
$status = ImageTool::resize([
'input' => $settings['input'],
'output' => $settings['output'],
'width' => $settings['width'],
'height' => $settings['height'],
'mode' => $settings['mode']
]);
return $status;
}
public function saveFileLFS($stringSeparator, $storeName, $productName)
{
$key = $storeName . $stringSeparator . $productName . $stringSeparator .
$this->request->data['Media']['file']['name'];
if(StorageManager::adapter('Local')->write($key,
file_get_contents($this->request->data['Media']['file']['tmp_name']))){
return true;
}else
{
return false;
}
}
}