public Directory<ObjectType> getUnderlyingDirectory() {
        return getDelegateDirectory();
    }
Returns the underlying directory that this DecoratingDirectory is
delegating to.

@return
   The underlying directory.
extensions/guacamole-vault/modules/guacamole-vault-ksm/src/main/java/org/apache/guacamole/vault/ksm/user/KsmDirectory.java