Annotating a class with a note

[Hyacinth Ali]

Problem: When a note being annotated (linked) to a class is deleted, annotating the class with another note throws a null pointer exception

Steps: Create one class and two notes. Link the class with one of the notes and afterward delete the linked note. Next, link the class with the remaining note; this action throws an exception:

Actual Result: Unable to annotate a class with a note if a previously linked note has been deleted.

Expected Result: A class should be linked with a note even if previously linked note or notes have been deleted