public function down(Schema $schema)
{
$this->abortIf($this->connection->getDatabasePlatform()->getName() != "postgresql");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_nodedata ALTER dimensionvalues TYPE JSON USING dimensionvalues::json");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_nodedata ALTER dimensionvalues DROP DEFAULT");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_nodedata ALTER accessroles TYPE JSON USING accessroles::json");
$this->addSql("ALTER TABLE typo3_typo3cr_domain_model_nodedata ALTER accessroles DROP DEFAULT");
}