https://bugs.openldap.org/show_bug.cgi?id=9257
--- Comment #2 from Konstantin Andreev grapvar@gmail.com --- rfc4519/2.7,2.18 strongly discourages using these attributes on it's own, although does not prohibit such use. What is described there closely matches `abstract' concept in, e.g. c++, so `slap_at_abstract' makes sense.
However, I do no argue neither pro nor contra slap_at_abstract. There is a conflict between the claim [/* cannot be instantiated */] and reality, and this conflict needs resolution.