public void setCardinality(Integer cardinality) {
        this.cardinality = cardinality;
    }
<p>
The approximate count of unique values that match the query.
</p>

@param cardinality
       The approximate count of unique values that match the query.
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/GetCardinalityResult.java