Add QuickFix for EMF error concerning unresolved proxy

If a Capella element references another element in a library (class generalization for example), and you delete it in the library, and you validate your model referencing the library, an EMF error raises "The feature X contains an unresolved proxy X".

Steps to reproduce:

1) Create a library L;
2) Create a class "Class Parent" inside L;
3) Create a model M;
4) Reference the library L;
5) Create a class "Class Child" in M;
6) Insert "Class Parent" and create a generalization from "Child" to "Parent";
7) Close the model M;
8) Delete "Parent" in the library L;
9) Open the model M;
10) Validate the model M;

Actual Results:

An EMF error appears that concerns an unresolved proxy for the now missing "Parent" class and no QuickFix is available for the error.

Expected Results:

A QuickFix is available for the error and, when applied, it deletes the Generalization link that has its "super" missing.

🆔 ECLIPSE-555108 / POLARSYS-2287 👷 matei.stamate 📅 2018-11-26 🔎 1.3.0

eclipse-capella / capella

Add QuickFix for EMF error concerning unresolved proxy #1471