}
@SuppressWarnings("unchecked")
- private <T> FutureCallback<T> mockFutureCallback(final FutureCallback<T> actual) {
+ private static <T> FutureCallback<T> mockFutureCallback(final FutureCallback<T> actual) {
FutureCallback<T> mock = mock(FutureCallback.class);
doAnswer(invocation -> {
actual.onFailure(invocation.getArgumentAt(0, Throwable.class));