我有班主任   public class Director {      private Long id;      @OneToOne(cascade = CascadeType.ALL)      @JoinColumn(name="transacao_id")      private Company company;      private Date registrationDate;       ...   }我有一個班級公司   public class Company {      private Long id;      private String cnpj;      private String description;       ...   }我需要在謂詞中添加另一個過濾器...我需要從Director獲取列表，使用 jpa 謂詞過濾cnpj 列表，例如：private Predicate[] criarRestricoes(FilterDTO filter, CriteriaBuilder builder, Root<Director> root) {        List<Predicate> predicates = new ArrayList<>();        Date today = new Date();        if (filter.getRegistrationDate() != null) {            predicates.add(builder.between(root.get("registrationDate").as(Date.class), today, filter.dateParam));        }        if (!StringUtils.isEmpty(filter.getCnpj())) {            predicates.add(builder.equal(???????????, ???????????????);        }         return predicates.toArray(new Predicate[predicates.size()]);    }