public void setConstantType(String constantType) {
        this.constantType = constantType;
    }
<p>
The constant type of a <code>TopicConstantValue</code>.
</p>

@param constantType
       The constant type of a <code>TopicConstantValue</code>.
@see ConstantType
aws-java-sdk-quicksight/src/main/java/com/amazonaws/services/quicksight/model/TopicConstantValue.java