import javax.annotation.Nullable;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;

@SuppressWarnings("unchecked")
public class ProviderTestUtil {
    public static <T> ProviderInternal<T> withNoValue() {
        return Providers.notDefined();
    }

    public static <T> ProviderInternal<T> withValues(T... values) {
        assert values.length > 0;