I want to change the page title of my custom maintenance page.

I already found out that the title is set hard in `pub/errors/processor.php` in the `Processor::process503()` method.

The `$pageTitle` member is public so I would be able to set it from outside of the object, weren't it that the method returns a `Magento\Framework\App\Response\Http` object directly.

**processor.php:**

```
public function process503()
{
    $this->pageTitle = 'Error 503: Service Unavailable';
    $this->_response->setHttpResponseCode(503);
    $this->_response->setBody($this->_renderPage('503.phtml'));
    return $this->_response;
}

```

**503.php:**

There's no place here where I could set the `$pageTitle` member from outside because `process503()` will overwrite it.

```
require_once 'processorFactory.php';

$processorFactory = new \Magento\Framework\Error\ProcessorFactory();
$processor = $processorFactory->createProcessor();
$response = $processor->process503();
$response->sendResponse();

```

Is there any way I can change the page title without editing core files?