Use pattern variables

Author: marcphilipp

junit-jupiter-engine/src/main/java/org/junit/jupiter/engine/descriptor/JupiterTestDescriptor.java

@@ -138,8 +138,7 @@ public ExecutionMode getExecutionMode() {
 			return executionMode.get();
 		}
 		Optional<TestDescriptor> parent = getParent();
-		while (parent.isPresent() && parent.get() instanceof JupiterTestDescriptor) {
-			JupiterTestDescriptor jupiterParent = (JupiterTestDescriptor) parent.get();
+		while (parent.isPresent() && parent.get() instanceof JupiterTestDescriptor jupiterParent) {
 			executionMode = jupiterParent.getExplicitExecutionMode();
 			if (executionMode.isPresent()) {
 				return executionMode.get();

junit-jupiter-engine/src/main/java/org/junit/jupiter/engine/discovery/MethodSelectorResolver.java

@@ -138,8 +138,7 @@ public Resolution resolve(UniqueIdSelector selector, Context context) {
 
 	@Override
 	public Resolution resolve(IterationSelector selector, Context context) {
-		if (selector.getParentSelector() instanceof MethodSelector) {
-			MethodSelector methodSelector = (MethodSelector) selector.getParentSelector();
+		if (selector.getParentSelector() instanceof MethodSelector methodSelector) {
 			return resolve(context, emptyList(), methodSelector.getJavaClass(), methodSelector::getJavaMethod,
 				(testDescriptor, childSelectorsSupplier) -> {
 					if (testDescriptor instanceof Filterable filterable) {