/**
  * @see Console\Command\Command
  */
 protected function execute(Console\Input\InputInterface $input, Console\Output\OutputInterface $output)
 {
     $em = $this->getHelper('em')->getEntityManager();
     $cmf = new DisconnectedClassMetadataFactory();
     $cmf->setEntityManager($em);
     $metadatas = $cmf->getAllMetadata();
     $metadatas = MetadataFilter::filter($metadatas, $input->getOption('filter'));
     // Process destination directory
     $destPath = realpath($input->getArgument('dest-path'));
     if (!file_exists($destPath)) {
         throw new \InvalidArgumentException(sprintf("Entities destination directory '<info>%s</info>' does not exist.", $destPath));
     } else {
         if (!is_writable($destPath)) {
             throw new \InvalidArgumentException(sprintf("Entities destination directory '<info>%s</info>' does not have write permissions.", $destPath));
         }
     }
     if (count($metadatas)) {
         // Create EntityGenerator
         $entityGenerator = new EntityGenerator();
         $entityGenerator->setGenerateAnnotations($input->getOption('generate-annotations'));
         $entityGenerator->setGenerateStubMethods($input->getOption('generate-methods'));
         $entityGenerator->setRegenerateEntityIfExists($input->getOption('regenerate-entities'));
         $entityGenerator->setUpdateEntityIfExists($input->getOption('update-entities'));
         $entityGenerator->setNumSpaces($input->getOption('num-spaces'));
         if (($attributeVisibility = $input->getOption('attribute-visibility')) !== null) {
             $entityGenerator->setAttributeVisibility($attributeVisibility);
         }
         if (($extend = $input->getOption('extend')) !== null) {
             $entityGenerator->setClassToExtend($extend);
         }
         foreach ($metadatas as $metadata) {
             $output->write(sprintf('Processing entity "<info>%s</info>"', $metadata->name) . PHP_EOL);
         }
         // Generating Entities
         $entityGenerator->generate($metadatas, $destPath);
         // Outputting information message
         $output->write(PHP_EOL . sprintf('Entity classes generated to "<info>%s</INFO>"', $destPath) . PHP_EOL);
     } else {
         $output->write('No Metadata Classes to process.' . PHP_EOL);
     }
 }