public void setDiagnosticCode(String diagnosticCode) {
        this.diagnosticCode = diagnosticCode;
    }
<p>
The status code issued by the reporting Message Transfer Authority (MTA). This field only appears if a delivery
status notification (DSN) was attached to the bounce and the <code>Diagnostic-Code</code> was provided in the
DSN.
</p>

@param diagnosticCode
       The status code issued by the reporting Message Transfer Authority (MTA). This field only appears if a
       delivery status notification (DSN) was attached to the bounce and the <code>Diagnostic-Code</code> was
       provided in the DSN.
aws-java-sdk-sesv2/src/main/java/com/amazonaws/services/simpleemailv2/model/Bounce.java