Symfony - EnvVarProcessor to set defaults of other types than string in yaml configuration

app.yaml

setting: '%env(int:default_value:123456789:EXAMPLE_NAME_OF_ENV_VARIABLE)%'

EnvVarProcessor.php

<?php
namespace App\DependencyInjection;

use Closure;
use Symfony\Component\DependencyInjection\EnvVarProcessorInterface;
use Symfony\Component\DependencyInjection\Exception\EnvNotFoundException;

/**
 * Class EnvVarProcessor
 * @package App\DependencyInjection
 *
 * @see https://symfony.com/doc/current/configuration/env_var_processors.html
 */
class EnvVarProcessor implements EnvVarProcessorInterface
{
    /**
     * @return string[]
     */
    public static function getProvidedTypes(): array
    {
        return [
            'default_value' => 'bool|int|float|string|array',
        ];
    }

    /**
     * @inheritDoc
     */
    public function getEnv($prefix, $name, Closure $getEnv)
    {
        if ('default_value' === $prefix) {
            $i = strpos($name, ':');
            $default = substr($name, 0, $i);
            $envName = substr($name, $i + 1);

            try {
                return $getEnv($envName);
            } catch (EnvNotFoundException $exception) {
                return $default;
            }
        }
    }
}

services.yaml

services:
  App\DependencyInjection\EnvVarProcessor:
    tags: ['container.env_var_processor']