Investigate use of PopulatedByPass annotation

[Masrepus]

Currently, the @PopulatedByPass annotation is only assigned to the fields constructor and instantiates in ConstructExpression. Is there still / was there ever any use for this annotation? Depending on that, we should either adopt the annotation more consistently or just remove it entirely

[oxisto]

I think it was / is there purely for documentation reasons, so in this case we should probably adopt it more often.

[JulianSchuette]

Yes, it is not used by Codyze. But it would be nice if it would be documented in a consistent way. A Javadoc may do as well.