public StringValueWhenUnsetConfiguration getValueWhenUnset() {
        return this.valueWhenUnset;
    }
<p>
The configuration that defines the default value of a <code>String</code> parameter when a value has not been
set.
</p>

@return The configuration that defines the default value of a <code>String</code> parameter when a value has not
        been set.
aws-java-sdk-quicksight/src/main/java/com/amazonaws/services/quicksight/model/StringParameterDeclaration.java