tree f2fcbaa215a60f394ca45093211af5cd57863762
parent ed33bd63d5215ebb888047c41b8a52e04f48ca06
author Jan-Philipp Steghöfer <ec@splashstudio.com> 1611565086 +0100
committer Jan-Philipp Steghöfer <ec@splashstudio.com> 1620224229 +0200

[Fix] Avoid errors if no trace model is present

In case no trace model is present, the isThereATraceBetween()
method in GenericMetaModelAdapter threw an NPE. This commit
introduces null checks in this method. If the trace model,
or one of the elements is null, the method now returns false.

Change-Id: Ia6f6b36e2e4b5fa2d0457d265c93497f45824596