public function createIndex($label, $property)
    {
        $statements = [];
        if (is_array($property)) {
            foreach ($property as $prop) {
                $statements[] = 'CREATE INDEX ON :'.$label.'('.$prop.')';
            }
        } else {
            $statements[] = 'CREATE INDEX ON :'.$label.'('.$property.')';
        }
        foreach ($statements as $statement) {
            $this->sendCypherQuery($statement);
        }

        return true;
    }