public function up(Schema $schema)
{
$this->abortIf($this->connection->getDatabasePlatform()->getName() != "postgresql");
$this->addSql("CREATE INDEX neos_eventlog_documentnodeidentifier ON typo3_neos_eventlog_domain_model_event (documentnodeidentifier)");
$this->addSql("CREATE INDEX neos_eventlog_eventtype ON typo3_neos_eventlog_domain_model_event (eventtype)");
}