can I create an hdb root of ? I would like to set up a server for testing, and i'm wondering if I can configure my server such that the root is essentially "", or "Empty String", so that I can add dc=testing,dc=com, or I can add ou=test1,...testn, or I can add anything else I want for experimenting with and learning how many features of openldap work, without having to constantly reconfigure my root, or be trapped in one awkwardly long root.