### Question:
HitPolicyPopoverImpl extends AbstractPopoverImpl<HitPolicyPopoverView, HasHitPolicyControl> implements HitPolicyPopoverView.Presenter { @Override public void setBuiltinAggregator(final BuiltinAggregator aggregator) { binding.ifPresent(b -> b.setBuiltinAggregator(aggregator)); } HitPolicyPopoverImpl(); @Inject  HitPolicyPopoverImpl(final HitPolicyPopoverView view,
                                final TranslationService translationService,
                                final BuiltinAggregatorUtils builtinAggregatorUtils); @Override String getPopoverTitle(); @Override void bind(final HasHitPolicyControl bound,
                     final int uiRowIndex,
                     final int uiColumnIndex); @Override void setHitPolicy(final HitPolicy hitPolicy); @Override void setBuiltinAggregator(final BuiltinAggregator aggregator);  }### Answer:
@Test public void testSetBuiltInAggregatorNullControl() { editor.setBuiltinAggregator(BuiltinAggregator.COUNT); verify(control, never()).setBuiltinAggregator(any(BuiltinAggregator.class)); }