public java.util.List<String> getNotDeviceOperatingSystems() {
        return notDeviceOperatingSystems;
    }
<p>
Device operating systems that the updated rule <b>will not</b> match. All other device operating systems will
match.
</p>

@return Device operating systems that the updated rule <b>will not</b> match. All other device operating systems
        will match.
aws-java-sdk-workmail/src/main/java/com/amazonaws/services/workmail/model/UpdateMobileDeviceAccessRuleRequest.java