memberof in openldap

[Brad Hartlove]

I have been trying to include the memberOf attribute in a new objectClass.
If I just set it to "MAY" (for example), it complains about using an
operational attribute in my definition.  I have seen quite a few Q&As about
this, but I am really trying to understand where this issue is
originating.  Maybe I haven't looked at the right one yet.    OpenDJ has
the ability to utilize it in custom classes, so I was hoping to be able to
also do the same in OpenLDAP.  Thoughts?