Cannot extend core HTTPException class

[arnisjuraga]

What I am trying to do is to extend core HTTPException class because Facebook API on HTTP requests replies with non-standart HTTP response codes and Codeigniter throws Exception on those cases.
So, I wanted to extend HTTPException class to add additional non-standart HTTP response codes (like 190 from https://developers.facebook.com/docs/graph-api/using-graph-api/error-handling/#errorcodes )

The documentation states that, e.g.:

If you need to use a constructor in your class make sure you extend the parent constructor:

https://codeigniter4.github.io/CodeIgniter4/extending/core_classes.html#extending-core-classes

My app/Config/Autload.php config line for additional class loading:

$classmap = [
            'CodeIgniter\HTTP\Exceptions\HTTPException' => APPPATH . '/HTTPException.php',
        ];

And the class file itself located under app/HTTPException.php:

<?php

use CodeIgniter\HTTP\Exceptions\HTTPException;

class HTTPException extends \CodeIgniter\HTTP\Exceptions\HTTPException
{
    public function __construct()
    {
        dd("Loaded!"); 
    }
}

My example looks like this, but it always throws some error that
Fatal error: Cannot declare class HTTPException because the name is already in use in /app/HTTPException.php on line 7

Similar questions:

And, also, it would be enough if those codes would be possible to "ignore"?
Like problem described here: https://forum.codeigniter.com/thread-75069.html
And the extension of core classes also discussed here: #358

[paulbalandan]

The name of the child class clashes with the parent class. So, perhaps, you can change the name of the core HTTPException in your use statement.

use CodeIgniter\HTTP\Exceptions\HTTPException as BaseHTTPException;

class HTTPException extends BaseHTTPException
{

}

[michalsn]

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