public void setFaceId(String faceId) {
        this.faceId = faceId;
    }
<p>
A unique identifier assigned to the face.
</p>

@param faceId
       A unique identifier assigned to the face.
aws-java-sdk-rekognition/src/main/java/com/amazonaws/services/rekognition/model/UnsuccessfulFaceDisassociation.java