RemoveUnusedDefinitionsPass example

$container
            ->setDefinition('foo', $definition)
        ;

        $this->process($container);

        $this->assertFalse($container->hasDefinition('foo'));
    }

    protected function process(ContainerBuilder $container)
    {
        (new RemoveUnusedDefinitionsPass())->process($container);
    }
}

$privatePool = new Definition();
        $privatePool->addArgument('namespace');
        $privatePool->addTag('cache.pool', ['clearer' => 'clearer_alias']);
        $container->setDefinition('private.pool', $privatePool);

        $clearer = new Definition();
        $clearer->setPublic(true);
        $container->setDefinition('clearer', $clearer);
        $container->setAlias('clearer_alias', 'clearer');

        $pass = new RemoveUnusedDefinitionsPass();
        foreach ([new CachePoolPass(), $pass, new CachePoolClearerPass()] as $pass) {
            $pass->process($container);
        }

        $expected = [[
            'public.pool' => new Reference('public.pool'),
            'pool2' => new Reference('public.pool2'),
        ]];
        $this->assertEquals($expected, $clearer->getArguments());
        $this->assertEquals($expected, $globalClearer->getArguments());
    }
}

new ResolveInvalidReferencesPass(),
            new AnalyzeServiceReferencesPass(true),
            new CheckCircularReferencesPass(),
            new CheckReferenceValidityPass(),
            new CheckArgumentsValidityPass(false),
        ]];

        $this->removingPasses = [[
            new RemovePrivateAliasesPass(),
            new ReplaceAliasByActualDefinitionPass(),
            new RemoveAbstractDefinitionsPass(),
            new RemoveUnusedDefinitionsPass(),
            new AnalyzeServiceReferencesPass(),
            new CheckExceptionOnInvalidReferenceBehaviorPass(),
            new InlineServiceDefinitionsPass(new AnalyzeServiceReferencesPass()),
            new AnalyzeServiceReferencesPass(),
            new DefinitionErrorExceptionPass(),
        ]];

        $this->afterRemovingPasses = [
            0 => [
                new ResolveHotPathPass(),
                new ResolveNoPreloadPass(),
                

new ResolveInvalidReferencesPass(),
            new AnalyzeServiceReferencesPass(true),
            new CheckCircularReferencesPass(),
            new CheckReferenceValidityPass(),
            new CheckArgumentsValidityPass(false),
        ]];

        $this->removingPasses = [[
            new RemovePrivateAliasesPass(),
            new ReplaceAliasByActualDefinitionPass(),
            new RemoveAbstractDefinitionsPass(),
            new RemoveUnusedDefinitionsPass(),
            new AnalyzeServiceReferencesPass(),
            new CheckExceptionOnInvalidReferenceBehaviorPass(),
            new InlineServiceDefinitionsPass(new AnalyzeServiceReferencesPass()),
            new AnalyzeServiceReferencesPass(),
            new DefinitionErrorExceptionPass(),
        ]];

        $this->afterRemovingPasses = [
            0 => [
                new ResolveHotPathPass(),
                new ResolveNoPreloadPass(),