java.lang.NullPointerException
   at org.nbheaven.sqe.tools.pmd.codedefects.hints.PMDHintTask.lambda$computeErrors$1(PMDHintTask.java:105)
   at org.nbheaven.sqe.tools.pmd.codedefects.hints.PMDHintTask$$Lambda$53/1881441314.test(PMDHintTask.java:0)
   at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:174)
   at java.util.TreeMap$KeySpliterator.forEachRemaining(TreeMap.java:2742)
   at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:512)
   at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:502)
   at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
   at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
   at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
   at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
   at org.nbheaven.sqe.tools.pmd.codedefects.hints.PMDHintTask.computeErrors(PMDHintTask.java:107)
   at org.nbheaven.sqe.tools.pmd.codedefects.hints.PMDHintTask.lambda$run$0(PMDHintTask.java:75)
   at org.nbheaven.sqe.tools.pmd.codedefects.hints.PMDHintTask$$Lambda$47/966110190.run(PMDHintTask.java:0)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)