NullPointerException when Verifying All Layers on a component with no AGREE annex

[iamundson]

If Verify All Layers is run on a component with no AGREE annex, but with subcomponents containing AGREE annexes, a null pointer exception is thrown with no useful information. This does not happen when Verify Single Layer is run. This is either due to a bug or the exception is not being handled gracefully. See stack trace below:

!ENTRY com.rockwellcollins.atc.agree.analysis 4 0 2022-08-18 16:37:34.080
!MESSAGE
!STACK 0
java.lang.NullPointerException
at jkind.api.results.CompositeAnalysisResult.addChild(CompositeAnalysisResult.java:19)
at com.rockwellcollins.atc.agree.analysis.handlers.VerifyHandler.runJob(VerifyHandler.java:223)
at com.rockwellcollins.atc.agree.analysis.handlers.AadlHandler.lambda$1(AadlHandler.java:127)
at com.rockwellcollins.atc.agree.analysis.handlers.AadlHandler.lambda$0(AadlHandler.java:113)
at org.eclipse.xtext.resource.OutdatedStateManager.exec(OutdatedStateManager.java:70)
at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.internalReadOnly(XtextDocument.java:525)
at org.eclipse.xtext.ui.editor.model.XtextDocument$XtextDocumentLocker.readOnly(XtextDocument.java:497)
at org.eclipse.xtext.ui.editor.model.XtextDocument.readOnly(XtextDocument.java:136)
at com.rockwellcollins.atc.agree.analysis.handlers.AadlHandler$1.runInWorkspace(AadlHandler.java:105)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:42)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)