@Override
    public boolean hasNext() {
        return innerIterator.hasNext();
    }
@Test
    public void shouldForwardHasNext() {
        when(mockedKeyValueIterator.hasNext()).thenReturn(true).thenReturn(false);

        assertTrue(keyValueIteratorFacade.hasNext());
        assertFalse(keyValueIteratorFacade.hasNext());
    }