GraphAware\Neo4j\Client\Client::getLabels PHP Method

    public function getLabels($conn = null)
    {
        $connection = $this->connectionManager->getConnection($conn);
        $result = $connection->getSession()->run('CALL db.labels()');
        return array_map(function (Record $record) {
            return new Label($record->get('label'));
        }, $result->records());
    }