java.util.NoSuchElementException
        at java.util.AbstractList$ListItr.previous(AbstractList.java:394)
        at org.netbeans.modules.ruby.AstPath$LeafToRootIterator.next(AstPath.java:300)
        at org.netbeans.modules.ruby.AstPath$LeafToRootIterator.next(AstPath.java:288)
        at org.netbeans.modules.ruby.RubyCodeCompleter.computeMethodCall(RubyCodeCompleter.java:1493)
        at org.netbeans.modules.ruby.RubyCodeCompleter.addParameters(RubyCodeCompleter.java:1616)
        at org.netbeans.modules.ruby.RubyCodeCompleter.complete(RubyCodeCompleter.java:2249)
        at org.netbeans.modules.gsfret.editor.completion.GsfCompletionProvider$JavaCompletionQuery.addCodeCompletionItems(GsfCompletionProvider.java:589)
        at org.netbeans.modules.gsfret.editor.completion.GsfCompletionProvider$JavaCompletionQuery.resolveCompletion(GsfCompletionProvider.java:575)
        at org.netbeans.modules.gsfret.editor.completion.GsfCompletionProvider$JavaCompletionQuery.run(GsfCompletionProvider.java:405)
        at org.netbeans.modules.gsfret.editor.completion.GsfCompletionProvider$JavaCompletionQuery.run(GsfCompletionProvider.java:233)
        at org.netbeans.napi.gsfret.source.Source.runUserActionTask(Source.java:485)
        at org.netbeans.modules.gsfret.editor.completion.GsfCompletionProvider$JavaCompletionQuery.query(GsfCompletionProvider.java:307)
        at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:218)
        at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:573)
        at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1005)