Add user references to Bug
Reorganize Bug documentation
Reorganize User documentation
Add bug references to User

"I chose to name the inverse methods in past-tense, which should indicate that the actual assigning has already taken place and the methods are only used for ensuring consistency of the references. This approach is my personal preference, you can choose whatever method to make this work."
Add product reference methods to Bug
Update reference properties in Bug
Reorganize properties in Bug
Add reference to Reference Properties in Bug
Add metadata for reference properties in User

"Now both reportedBugs and assignedBugs are inverse relations, which means the join details have already been defined on the owning side. Therefore we only have to specify the property on the Bug class that holds the owning sides."