public function down(Schema $schema)
{
$this->abortIf($this->connection->getDatabasePlatform()->getName() != "postgresql");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_workspace DROP CONSTRAINT fk_71de9cfbe9bfe681");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_workspace ADD CONSTRAINT fk_71de9cfbe9bfe681 FOREIGN KEY (baseworkspace) REFERENCES typo3_typo3cr_domain_model_workspace (persistence_object_identifier) NOT DEFERRABLE INITIALLY IMMEDIATE");
}