validateDateFormat example

$queries = [];
        foreach ($fields as $field) {
            /** @var SearchRanking|null $flag */
            $flag = $field->getFlag(SearchRanking::class);

            $ranking = $multiplier;
            if ($flag) {
                $ranking = $flag->getRanking() * $multiplier;
            }

            if ($field instanceof DateTimeField) {
                if (!$this->validateDateFormat(Defaults::STORAGE_DATE_FORMAT, $term->getOriginal()->getTerm())) {
                    continue;
                }
            }

            $select = $root . '.' . $field->getPropertyName();

            if ($field instanceof ManyToManyAssociationField) {
                $queries = array_merge(
                    $queries,
                    $this->buildScoreQueries($term, $field->getToManyReferenceDefinition(), $select, $context, $ranking)
                );