The getter contents was called on null

[MichaelRFairhurst]

Need to determine if this still happens at master, or just the latest published version.

516300408871:PluginEx:NoSuchMethodError:: The getter 'contents' was called on null.
Receiver:: null                                                                  
Tried calling:: contents:#0      Object.noSuchMethod (dart::core-patch/dart::core/object_patch.dart::46)
#1      AngularNavigation._addTemplateRegions (package::angular_analyzer_plugin/src/navigation.dart::92::51)
#2      AngularNavigation.computeNavigation (package::angular_analyzer_plugin/src/navigation.dart::47::7)
#3      AngularAnalyzerPlugin.onResult (package::angular_analyzer_plugin/plugin.dart::112::9)
#4      AngularAnalyzerPlugin.createAnalysisDriver.<anonymous closure> (package::angular_analyzer_plugin/plugin.dart::87::29)
#5      _RootZone.runUnaryGuarded (dart::async/zone.dart::1316)                  
#6      _BufferingStreamSubscription._sendData (dart::async/stream_impl.dart::330)
#7      _DelayedData.perform (dart::async/stream_impl.dart::578)                 
#8      _StreamImplEvents.handleNext (dart::async/stream_impl.dart::694)         
#9      _PendingEvents.schedule.<anonymous closure> (dart::async/stream_impl.dart::654)
#10     _microtaskLoop (dart::async/schedule_microtask.dart::41)                 
#11     _startMicrotaskLoop (dart::async/schedule_microtask.dart::50)            
#12     _Timer._runTimers (dart::isolate-patch/dart::isolate/timer_impl.dart::376)
#13     _Timer._handleMessage (dart::isolate-patch/dart::isolate/timer_impl.dart::401)
#14     _RawReceivePortImpl._handleMessage (dart::isolate-patch/dart::isolate/isolate_patch.dart::163)
:/home/mfairhurst/.pub-cache/hosted/pub.dartlang.org/angular-5.0.0-alpha/tools/analyzer_plugin:Angular Analysis Plugin:1.0.0-alpha.0