Java: Intention that wraps list/set/map with Collections.unmodifiableList/Set/Map (IDEA-93154)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/wrapWithUnmodifiable/afterSet.java

@@ -0,0 +1,11 @@
+// "Wrap with unmodifiable set" "true"
+import java.util.Collections;
+import java.util.Set;
+import java.util.HashSet;
+
+class C {
+    Set<String> test() {
+        Set<String> result = new HashSet<>();
+        return Collections.unmodifiableSet(result);
+    }
+}