public String getDomainId() {
        return this.domainId;
    }
<p>
The identifier of the domain that contains the speaker enrollment job and in which the speakers are enrolled.
</p>

@return The identifier of the domain that contains the speaker enrollment job and in which the speakers are
        enrolled.
aws-java-sdk-voiceid/src/main/java/com/amazonaws/services/voiceid/model/StartSpeakerEnrollmentJobRequest.java