public void setL3Ids(java.util.Collection<String> l3Ids) {
        if (l3Ids == null) {
            this.l3Ids = null;
            return;
        }

        this.l3Ids = new java.util.ArrayList<String>(l3Ids);
    }
<p>
The identifiers for level 3 hierarchy groups.
</p>

@param l3Ids
       The identifiers for level 3 hierarchy groups.
aws-java-sdk-connect/src/main/java/com/amazonaws/services/connect/model/AgentHierarchyGroups.java