Doctrine\ORM\Tools\SchemaTool::getDropDatabaseSQL PHP Method

    public function getDropDatabaseSQL()
    {
        $sm = $this->_em->getConnection()->getSchemaManager();
        $schema = $sm->createSchema();

        $visitor = new \Doctrine\DBAL\Schema\Visitor\DropSchemaSqlCollector($this->_platform);
        /* @var $schema \Doctrine\DBAL\Schema\Schema */
        $schema->visit($visitor);
        return $visitor->getQueries();
    }

 protected function executeSchemaCommand(InputInterface $input, OutputInterface $output, SchemaTool $schemaTool, array $metadatas)
 {
     $isFullDatabaseDrop = $input->getOption('full-database');
     if ($input->getOption('dump-sql') === true) {
         if ($isFullDatabaseDrop) {
             $sqls = $schemaTool->getDropDatabaseSQL();
         } else {
             $sqls = $schemaTool->getDropSchemaSQL($metadatas);
         }
         $output->write(implode(';' . PHP_EOL, $sqls) . PHP_EOL);
     } else {
         if ($input->getOption('force') === true) {
             $output->write('Dropping database schema...' . PHP_EOL);
             if ($isFullDatabaseDrop) {
                 $schemaTool->dropDatabase();
             } else {
                 $schemaTool->dropSchema($metadatas);
             }
             $output->write('Database schema dropped successfully!' . PHP_EOL);
         } else {
             $output->write('ATTENTION: This operation should not be executed in a production environment.' . PHP_EOL . PHP_EOL);
             if ($isFullDatabaseDrop) {
                 $sqls = $schemaTool->getDropDatabaseSQL();
             } else {
                 $sqls = $schemaTool->getDropSchemaSQL($metadatas);
             }
             if (count($sqls)) {
                 $output->write('Schema-Tool would execute ' . count($sqls) . ' queries to drop the database.' . PHP_EOL);
                 $output->write('Please run the operation with --force to execute these queries or use --dump-sql to see them.' . PHP_EOL);
             } else {
                 $output->write('Nothing to drop. The database is empty!' . PHP_EOL);
             }
         }
     }
 }