public void setRecursive(Boolean recursive) {
        this.recursive = recursive;
    }
<p>
When true, list things in this thing group and in all child groups as well.
</p>

@param recursive
       When true, list things in this thing group and in all child groups as well.
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/ListThingsInThingGroupRequest.java