// "Replace with 'List.copyOf()' call" "false" import org.jetbrains.annotations.*; import java.util.*; class Scratch { public static void main(String[] args) { var data = new ArrayList<@Nullable String>(); data.add("foo"); data.add("bar"); data.add(null); var list = Collections.unmodifiableList(new ArrayList<>(data)); System.out.println(list); } }