code: public function getSql()
      {
          $sql = '';
          $schemas = $this->getSchemasCommand->execute();
          foreach ($schemas as $schema) {
              $sql .= sprintf('DROP SCHEMA "%s" CASCADE;', $schema->getName());
          }
          $sql .= 'CREATE SCHEMA public;';
  
          return $sql;
      }
docs: {@inheritdoc}