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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace N98\Magento\Command\Cache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Magento\Framework\App\CacheInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Magento\PageCache\Model\Cache\Type as FullPageCache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use N98\Magento\Command\AbstractMagentoCommand;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use N98\Util\Console\Helper\Table\Renderer\RendererFactory;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Console\Input\InputInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Console\Input\InputOption;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Console\Output\OutputInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Symfony\Component\Validator\Exception\RuntimeException;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                class ReportCommand extends AbstractMagentoCommand  | 
            
            
                                                                        
                            
            
                                    
            
            
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                { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @var CacheInterface  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    private $cache;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @var FullPageCache  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    private $fpc;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @param CacheInterface $cache  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @param FullPageCache $fpc  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function inject(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        CacheInterface $cache,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        FullPageCache $fpc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->cache = $cache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->fpc = $fpc;  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @return void  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function configure()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->setName('cache:report') | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'fpc',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_NONE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Use full page cache instead of core cache'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'tags',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                't',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_NONE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Output tags'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'mtime',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'm',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_NONE,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Output last modification time'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'filter-id',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                '',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_OPTIONAL,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Filter output by ID (substring)'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'filter-tag',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                '',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_OPTIONAL,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Filter output by TAG (separate multiple tags by comma)'  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->addOption(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'format',  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                null,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                InputOption::VALUE_OPTIONAL,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                'Output Format. One of [' . implode(', ', RendererFactory::getFormats()) . ']' | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ->setDescription('View inside the cache'); | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @param InputInterface $input  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @param OutputInterface $output  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @return int|void  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     * @throws RuntimeException  | 
            
            
                                                                        
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function execute(InputInterface $input, OutputInterface $output)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->detectMagento($output, true);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!$this->initMagento()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            return;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /** @var \Zend_Cache_Core $lowLevelFrontend */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if ($input->hasOption('fpc') && $input->getOption('fpc')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $lowLevelFrontend = $this->fpc->getLowLevelFrontend();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    100
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                        } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $lowLevelFrontend = $this->cache->getFrontend()->getLowLevelFrontend();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $table = [];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $cacheIds = $lowLevelFrontend->getIds();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filterId = $input->getOption('filter-id'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $filterTag = $input->getOption('filter-tag'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $mTime = $input->getOption('mtime'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $tags = $input->getOption('tags'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($cacheIds as $cacheId) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($filterId !== null &&  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                !stristr($cacheId, $filterId)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                continue;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $metadata = $lowLevelFrontend->getMetadatas($cacheId);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($filterTag !== null &&  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                !$this->isTagFiltered($metadata, $input)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                continue;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $row = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $cacheId,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                date('Y-m-d H:i:s', $metadata['expire']), | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($mTime) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $row[] = date('Y-m-d H:i:s', $metadata['mtime']); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($tags) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $row[] = implode(', ', $metadata['tags']); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $table[] = $row;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    138
                 | 
                                    
                                                     | 
                
                 | 
                        $headers = ['ID', 'EXPIRE'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                        if ($mTime) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                            $headers[] = 'MTIME';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                        if ($tags) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    143
                 | 
                                    
                                                     | 
                
                 | 
                            $headers[] = 'TAGS';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    145
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                        $this  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                            ->getHelper('table') | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    148
                 | 
                                    
                                                     | 
                
                 | 
                            ->setHeaders($headers)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    149
                 | 
                                    
                                                     | 
                
                 | 
                            ->renderByFormat($output, $table, $input->getOption('format')); | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    150
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    151
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    152
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    153
                 | 
                                    
                                                     | 
                
                 | 
                     * @param array $metadata  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    154
                 | 
                                    
                                                     | 
                
                 | 
                     * @param InputInterface $input  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    155
                 | 
                                    
                                                     | 
                
                 | 
                     * @return bool  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    156
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    157
                 | 
                                    
                                                     | 
                
                 | 
                    private function isTagFiltered($metadata, $input)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    158
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    159
                 | 
                                    
                                                     | 
                
                 | 
                        return (bool) count(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    160
                 | 
                                    
                                                     | 
                
                 | 
                            array_intersect(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                                $metadata['tags'],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                                explode(',', $input->getOption('filter-tag')) | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                            )  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    164
                 | 
                                    
                                                     | 
                
                 | 
                        );  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    165
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    167
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: