[ui] Functions like `typeIsExactly` and alike are not available in the designer

[Vampire]

If you try to use those functions, you just get an exception in the exception log that the function is missing:

net.sourceforge.pmd.util.fxdesigner.model.XPathEvaluationException: java.lang.RuntimeException: org.jaxen.UnresolvableException: No Such Function typeIsExactly
	at net.sourceforge.pmd.util.fxdesigner.model.XPathEvaluator.evaluateQuery(XPathEvaluator.java:89)
	at net.sourceforge.pmd.util.fxdesigner.XPathPanelController.evaluateXPath(XPathPanelController.java:250)
	at net.sourceforge.pmd.util.fxdesigner.MainDesignerController.lambda$refreshXPathResults$10(MainDesignerController.java:210)
	at java.util.Optional.ifPresent(Optional.java:159)
	at net.sourceforge.pmd.util.fxdesigner.MainDesignerController.refreshXPathResults(MainDesignerController.java:210)
	at net.sourceforge.pmd.util.fxdesigner.XPathPanelController.lambda$beforeParentInit$4(XPathPanelController.java:137)
	at org.reactfx.util.NonAccumulativeStreamNotifications.lambda$head$0(NotificationAccumulator.java:134)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:68)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:57)
	at org.reactfx.ProperEventStream.emit(ProperEventStream.java:18)
	at org.reactfx.EventStream$1.lambda$observeInputs$0(EventStream.java:423)
	at org.reactfx.util.NonAccumulativeStreamNotifications.lambda$head$0(NotificationAccumulator.java:134)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:68)
	at org.reactfx.ObservableBase.notifyObservers(ObservableBase.java:57)
	at org.reactfx.ProperEventStream.emit(ProperEventStream.java:18)
	at org.reactfx.SuccessionReducingStream.handleTimeout(SuccessionReducingStream.java:73)
	at org.reactfx.util.FxTimer.lambda$restart$0(FxTimer.java:89)
	at com.sun.scenario.animation.shared.TimelineClipCore.visitKeyFrame(TimelineClipCore.java:239)
	at com.sun.scenario.animation.shared.TimelineClipCore.playTo(TimelineClipCore.java:180)
	at javafx.animation.Timeline.impl_playTo(Timeline.java:176)
	at javafx.animation.AnimationAccessorImpl.playTo(AnimationAccessorImpl.java:39)
	at com.sun.scenario.animation.shared.SingleLoopClipEnvelope.timePulse(SingleLoopClipEnvelope.java:99)
	at javafx.animation.Animation.impl_timePulse(Animation.java:1102)
	at javafx.animation.Animation$1.lambda$timePulse$25(Animation.java:186)
	at java.security.AccessController.doPrivileged(Native Method)
	at javafx.animation.Animation$1.timePulse(Animation.java:185)
	at com.sun.scenario.animation.AbstractMasterTimer.timePulseImpl(AbstractMasterTimer.java:344)
	at com.sun.scenario.animation.AbstractMasterTimer$MainLoop.run(AbstractMasterTimer.java:267)
	at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:506)
	at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:490)
	at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$404(QuantumToolkit.java:319)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run$$$capture(InvokeLaterDispatcher.java:95)
	at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
	at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.RuntimeException: org.jaxen.UnresolvableException: No Such Function typeIsExactly
	at net.sourceforge.pmd.lang.rule.xpath.JaxenXPathRuleQuery.evaluate(JaxenXPathRuleQuery.java:73)
	at net.sourceforge.pmd.lang.rule.XPathRule.evaluate(XPathRule.java:114)
	at net.sourceforge.pmd.lang.java.rule.JavaRuleChainVisitor.visit(JavaRuleChainVisitor.java:42)
	at net.sourceforge.pmd.lang.rule.AbstractRuleChainVisitor.visitAll(AbstractRuleChainVisitor.java:96)
	at net.sourceforge.pmd.RuleChain.apply(RuleChain.java:67)
	at net.sourceforge.pmd.RuleSets.apply(RuleSets.java:140)
	at net.sourceforge.pmd.util.fxdesigner.model.XPathEvaluator.evaluateQuery(XPathEvaluator.java:84)
	... 35 more
Caused by: org.jaxen.UnresolvableException: No Such Function typeIsExactly
	at org.jaxen.SimpleFunctionContext.getFunction(SimpleFunctionContext.java:127)
	at org.jaxen.ContextSupport.getFunction(ContextSupport.java:242)
	at org.jaxen.Context.getFunction(Context.java:216)
	at org.jaxen.expr.DefaultFunctionCallExpr.evaluate(DefaultFunctionCallExpr.java:176)
	at org.jaxen.expr.DefaultAndExpr.evaluate(DefaultAndExpr.java:91)
	at org.jaxen.expr.DefaultPredicate.evaluate(DefaultPredicate.java:95)
	at org.jaxen.expr.PredicateSet.applyPredicate(PredicateSet.java:269)
	at org.jaxen.expr.PredicateSet.evaluatePredicates(PredicateSet.java:244)
	at org.jaxen.expr.DefaultStep.evaluate(DefaultStep.java:164)
	at org.jaxen.expr.DefaultLocationPath.evaluate(DefaultLocationPath.java:140)
	at org.jaxen.expr.DefaultXPathExpr.asList(DefaultXPathExpr.java:102)
	at org.jaxen.BaseXPath.selectNodesForContext(BaseXPath.java:677)
	at org.jaxen.BaseXPath.selectNodes(BaseXPath.java:216)
	at net.sourceforge.pmd.lang.rule.xpath.JaxenXPathRuleQuery.evaluate(JaxenXPathRuleQuery.java:69)
	... 41 more

[aldaris]

I could use pmd-java:typeIs function in the designer on 6.17.0 without a problem. The view on the top left only displayed typeIs, so it took a while to figure out how to use it exactly for me at least.