public function down(Schema $schema)
{
$this->abortIf($this->connection->getDatabasePlatform()->getName() != 'postgresql', 'Migration can only be executed safely on "postgresql".');
$this->addSql("UPDATE neos_flow_security_account SET roleidentifiers=REPLACE(roleidentifiers, 'Neos.Flow:', 'TYPO3.Flow:')");
$this->addSql("UPDATE neos_flow_security_account SET roleidentifiers=REPLACE(roleidentifiers, 'Neos.Neos:', 'TYPO3.Neos:')");
$this->addSql("UPDATE neos_flow_security_account SET roleidentifiers=REPLACE(roleidentifiers, 'Neos.ContentRepository:', 'TYPO3.TYPO3CR:')");
$this->addSql("UPDATE neos_flow_security_account SET roleidentifiers=REPLACE(roleidentifiers, 'Neos.Setup:', 'TYPO3.Setup:')");
}