public List<ParsedTerm> filterElementsContainingUsefulInformation(final Map<String, List<ParsedTerm>> parsedTermsGroupedByField) {
        return parsedTermsGroupedByField.values()
                .stream()
                .map(this::filterElementsContainingUsefulInformation)
                .flatMap(Collection::stream)
                .collect(Collectors.toList());
    }
@Test
    void doesNotLimitOnSingleElement() {
        final Map<String, List<ParsedTerm>> fieldTerms = Map.of("field", List.of(
                ParsedTerm.create("field", "oh!")
        ));
        assertThat(toTest.filterElementsContainingUsefulInformation(fieldTerms))
                .hasSize(1)
                .contains(ParsedTerm.create("field", "oh!"));
    }