public void setX509Subject(String x509Subject) {
        this.x509Subject = x509Subject;
    }
<p>
The x509 principal identifier of the authenticating certificate.
</p>

@param x509Subject
       The x509 principal identifier of the authenticating certificate.
aws-java-sdk-iamrolesanywhere/src/main/java/com/amazonaws/services/iamrolesanywhere/model/SubjectDetail.java