@Test
@SuppressWarnings("null")
public void testNulls() {

    TsFiller filler = TsCursorAsFiller.of(logger, goodCursor, monikers, goodCursor);
    assertThatThrownBy(() -> filler.fillCollection(null)).isInstanceOf(NullPointerException.class);
    assertThatThrownBy(() -> filler.fillSeries(null)).isInstanceOf(NullPointerException.class);
}