NPE in ApexExpressionUtils

I've received the following report via IntelliJ exception analyzer tool, so I don't actually know how to reproduce it.
IntelliJ Platform version: 162.1447 Plugin: IlluminatedCloud 1.7.3.1-idea14 OS: Windows 10 Java: Oracle Corporation 1.8.0_76-release
java.lang.NullPointerException
    at com.illuminatedcloud.intellij.psi.util.ApexExpressionUtil$1.getExpressionTypes(SourceFile:189)
    at com.illuminatedcloud.intellij.psi.util.ApexExpressionUtil.getExpressionTypes(SourceFile:767)
    at com.illuminatedcloud.intellij.psi.impl.ApexSimpleRefExpressionMixin.tryAsContinuationOfRefExpression(SourceFile:261)
    at com.illuminatedcloud.intellij.psi.impl.ApexSimpleRefExpressionMixin.getReferencesNoCache(SourceFile:108)
    at com.illuminatedcloud.intellij.psi.impl.ApexSimpleRefExpressionMixin$1.doGetReferences(SourceFile:94)
    at com.illuminatedcloud.intellij.psi.impl.PsiReferenceCache.compute(SourceFile:66)
    at com.intellij.psi.util.CachedValuesManager$1.compute(CachedValuesManager.java:137)
    at com.intellij.psi.impl.PsiCachedValueImpl.doCompute(PsiCachedValueImpl.java:49)
    at com.intellij.util.CachedValueBase.getValueWithLock(CachedValueBase.java:222)
    at com.intellij.psi.impl.PsiCachedValue.getValueWithLock(PsiCachedValue.java:65)
    at com.intellij.psi.impl.PsiCachedValueImpl.getValue(PsiCachedValueImpl.java:38)
    at com.intellij.util.CachedValuesManagerImpl.getCachedValue(CachedValuesManagerImpl.java:84)
    at com.intellij.psi.util.CachedValuesManager.getCachedValue(CachedValuesManager.java:133)
    at com.illuminatedcloud.intellij.psi.impl.PsiReferenceCache.getReferences(SourceFile:58)
    at com.illuminatedcloud.intellij.psi.impl.ApexSimpleRefExpressionMixin.getReferences(SourceFile:86)
    at com.illuminatedcloud.intellij.editor.IlluminatedCloudSyntaxAnnotator.annotate(SourceFile:74)
    at com.intellij.codeInsight.daemon.impl.DefaultHighlightVisitor.runAnnotators(DefaultHighlightVisitor.java:139)
    at com.intellij.codeInsight.daemon.impl.DefaultHighlightVisitor.visit(DefaultHighlightVisitor.java:102)
    at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.runVisitors(GeneralHighlightingPass.java:334)
    at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.lambda$collectHighlights$2(GeneralHighlightingPass.java:274)
    at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.analyzeByVisitors(GeneralHighlightingPass.java:293)
    at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.lambda$analyzeByVisitors$3(GeneralHighlightingPass.java:296)
    at com.intellij.codeInsight.daemon.impl.DefaultHighlightVisitor.analyze(DefaultHighlightVisitor.java:86)
    at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.analyzeByVisitors(GeneralHighlightingPass.java:296)
    at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.collectHighlights(GeneralHighlightingPass.java:268)
    at com.intellij.codeInsight.daemon.impl.GeneralHighlightingPass.collectInformationWithProgress(GeneralHighlightingPass.java:207)
    at com.intellij.codeInsight.daemon.impl.ProgressableTextEditorHighlightingPass.doCollectInformation(ProgressableTextEditorHighlightingPass.java:82)
    at com.intellij.codeHighlighting.TextEditorHighlightingPass.collectInformation(TextEditorHighlightingPass.java:70)
    at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.lambda$null$0(PassExecutorService.java:434)
    at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1033)
    at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.lambda$doRun$1(PassExecutorService.java:427)
    at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:494)
    at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:443)
    at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:54)
    at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.doRun(PassExecutorService.java:426)
    at com.intellij.codeInsight.daemon.impl.PassExecutorService$ScheduledPass.run(PassExecutorService.java:402)
    at com.intellij.concurrency.JobLauncherImpl$VoidForkJoinTask$1.exec(JobLauncherImpl.java:154)
    at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
    at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
    at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
    at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Comments (3)
