public void setRevisionNumber(Long revisionNumber) {
        this.revisionNumber = revisionNumber;
    }
<p>
The number that specifies the revision of the system to get.
</p>

@param revisionNumber
       The number that specifies the revision of the system to get.
aws-java-sdk-iotthingsgraph/src/main/java/com/amazonaws/services/iotthingsgraph/model/GetSystemTemplateRequest.java