public void setPostalCodePlus4(String postalCodePlus4) {
        this.postalCodePlus4 = postalCodePlus4;
    }
<p>
The zip + 4 or postal code +4 of the candidate address.
</p>

@param postalCodePlus4
       The zip + 4 or postal code +4 of the candidate address.
aws-java-sdk-chimesdkvoice/src/main/java/com/amazonaws/services/chimesdkvoice/model/CandidateAddress.java