SYSML17 — It should not be allowed to modify an AdjunctProperty

As described in the specification, AdjunctProperties are clearly intended for representing as properties things that should have been defined as such but that are not for historical reasons.

However, even if it can actually be convenient to use read actions adjunct properties, it is not clear what is the semantics of using write actions on them. In addition, per its description, it is clear that and an adjunct property is derived from its principal.

Base on the above, constraints shall be added in order to: (1) require an adjunct property to be derived, and (2) prevent using a adjunct property as the target of write action