Add JavaUtils class to imports in JRAG files.

eraser-base/src/main/jastadd/Imports.jadd

 import java.util.*;
 import de.tudresden.inf.st.eraser.util.MemberPrinter;
+import de.tudresden.inf.st.eraser.util.JavaUtils;
 
 aspect Imports {
 

eraser-base/src/main/jastadd/MachineLearning.jrag

@@ -14,7 +14,7 @@ aspect MachineLearning {
   syn Leaf MachineLearningModel.classify();
 
   //--- currentActivityName ---
-  syn String Root.currentActivityName() = de.tudresden.inf.st.eraser.util.JavaUtils.ifPresentOrElseReturn(
+  syn String Root.currentActivityName() = JavaUtils.ifPresentOrElseReturn(
       currentActivity(),
       Activity::getLabel,
       () -> "no activity"
@@ -64,7 +64,7 @@ aspect MachineLearning {
   public void DummyMachineLearningModel.connectItems(List<String> itemNames) {
     logger.info("Storing items to connect");
     for (String itemName : itemNames) {
-      de.tudresden.inf.st.eraser.util.JavaUtils.ifPresentOrElse(getRoot().resolveItem(itemName),
+      JavaUtils.ifPresentOrElse(getRoot().resolveItem(itemName),
           this::addItem,
           () -> logger.warn("Could not resolve item '{}'", itemName));
     }
@@ -107,7 +107,7 @@ aspect MachineLearning {
   //--- ActivityItem ---
   @Override
   public double ActivityItem.getState() {
-    return de.tudresden.inf.st.eraser.util.JavaUtils.ifPresentOrElseReturn(
+    return JavaUtils.ifPresentOrElseReturn(
       getRoot().currentActivity(),
       activity -> (double) activity.getIdentifier(),
       () -> super.getState()

eraser-base/src/main/jastadd/NeuralNetwork.jrag

@@ -100,7 +100,7 @@ aspect NeuralNetwork {
       }
       String itemName = itemNames.get(i);
       InputNeuron neuron = getInputNeuron(i);
-      de.tudresden.inf.st.eraser.util.JavaUtils.ifPresentOrElse(getRoot().resolveItem(itemName),
+      JavaUtils.ifPresentOrElse(getRoot().resolveItem(itemName),
           neuron::setItem,
           () -> logger.warn("Could not resolve item '{}'", itemName));
     }