openide/java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/wrapWithUnmodifiable/afterMap.java

// "Wrap with unmodifiable map" "true-preview"
import java.util.Collections;
import java.util.Map;
import java.util.HashMap;

class C {
    Map<String, Integer> test() {
        var result = new HashMap<>();
        return Collections.unmodifiableMap(result);
    }
}