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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                declare(strict_types=1);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /*  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * This file is part of the Sonata Project package.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * (c) Thomas Rabaix <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * For the full copyright and license information, please view the LICENSE  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * file that was distributed with this source code.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace Sonata\TranslationBundle\Block;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sonata\BlockBundle\Block\BlockContextInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Sonata\BlockBundle\Block\Service\AbstractBlockService;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Bundle\FrameworkBundle\Templating\EngineInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\HttpFoundation\Response;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\OptionsResolver\OptionsResolver;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\OptionsResolver\OptionsResolverInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Nicolas Bastien <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class LocaleSwitcherBlockService extends AbstractBlockService  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $showCountryFlags;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    public function __construct(?string $name = null, EngineInterface $templating = null, ?bool $showCountryFlags = false)  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        parent::__construct($name, $templating);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $this->showCountryFlags = $showCountryFlags;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * NEXT_MAJOR: remove this method.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @deprecated since 3.x, will be removed in 4.0  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function setDefaultSettings(OptionsResolverInterface $resolver)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->configureSettings($resolver);  | 
            
                            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function configureSettings(OptionsResolver $resolver)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $resolver->setDefaults(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'admin' => null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'object' => null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'template' => '@SonataTranslation/Block/block_locale_switcher.html.twig',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'locale_switcher_route' => null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'locale_switcher_route_parameters' => [],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'locale_switcher_show_country_flags' => $this->showCountryFlags,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function execute(BlockContextInterface $blockContext, Response $response = null)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->renderPrivateResponse($blockContext->getTemplate(), [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'block_context' => $blockContext,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            'block' => $blockContext->getBlock(),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ], $response);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: