Immutable (immutable) List object conversion function in Java8

@SafeVarargs
public static <E> List<E> toConstList(E... data) {
    int length = (data == null) ? 0 : data.length;

    switch (length) {
    case 0:
        return Collections.emptyList();
    case 1:
        return Collections.singletonList(data[0]);
    default:
        return Collections.unmodifiableList(Arrays.asList(data));
    }
}

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