public void setDomain(String domain) {
        this.domain = domain;
    }
<p>
The fully qualified domain name (FQDN) of the certificate that needs to be validated.
</p>

@param domain
       The fully qualified domain name (FQDN) of the certificate that needs to be validated.
aws-java-sdk-acm/src/main/java/com/amazonaws/services/certificatemanager/model/ResendValidationEmailRequest.java