### Question:
ProviderQueryFiltering extends SortingFilteringProvider<Query, ResolverQueryFilter, ResolverQueryOrderBy> { @Override public ResolverQueryFilter createFilterResolver() { return new ResolverQueryFilter(); }  @Override ResolverQueryFilter createFilterResolver(); @Override ResolverQueryOrderBy createOrderByResolver();  }### Answer:
@Test public void createFilterResolver() { ProviderQueryFiltering provider = new ProviderQueryFiltering(); Object result = provider.createFilterResolver(); Assert.assertNotNull(result); }