public function dropUniqueConstraint($label, $property)
    {
        $statements = [];
        $identifier = strtolower($label);
        if (is_array($property)) {
            foreach ($property as $prop) {
                $statements[] = 'DROP CONSTRAINT ON ('.$identifier.':'.$label.') ASSERT '.$identifier.'.'.$prop.' IS UNIQUE';
            }
        } else {
            $statements[] = 'DROP CONSTRAINT ON ('.$identifier.':'.$label.') ASSERT '.$identifier.'.'.$property.' IS UNIQUE';
        }
        foreach ($statements as $statement) {
            $this->sendCypherQuery($statement);
        }

        return true;
    }