Override ConfigFactory

Hooks.php

<?php
$services->redefineService(
	'ConfigFactory',
	function ( MediaWikiServices $services ) {
		// Use the bootstrap config to initialize the ConfigFactory.
		$bootstrapConfig = $services->getBootstrapConfig();
		/** @var array $registry */
		$registry = $bootstrapConfig->get( 'ConfigRegistry' );
		/** @var Config\SetConfigurationFactory $setFactory */
		$setFactory = $services->getService( 'SetConfigurationFactory' );
		$factory = new ConfigFactory( $setFactory );

		foreach ( $registry as $name => $callback ) {
			$factory->register( $name, $callback );
		}

		return $factory;
	}
);

I'd need the MainWANObjectCache service on line 10. It will call the MainConfig service, which in turn will call the ConfigFactory provided by MediaWiki, which I wish to override.