public void setLevel4(AgentHierarchyGroup level4) {
        this.level4 = level4;
    }
<p>
The group at level four of the agent hierarchy.
</p>

@param level4
       The group at level four of the agent hierarchy.
aws-java-sdk-connect/src/main/java/com/amazonaws/services/connect/model/HierarchyGroups.java