我有這兩個實體，我想在進行 JPA 一對一時使用將@OneToOne 映射到 SQL 數據庫中（表中的一條記錄恰好對應于相關表中的一條記錄）在這里我如何創建@OneToOne 關系@Entity@Table(name = "IMP_Radio")@NamedQuery(name = "ImpactRadio.findAll", query = "SELECT ia FROM ImpactRadio ia ")public class ImpactRadio implements Serializable, IEntity<String> {    /**     *      */    private static final long serialVersionUID = 1L;    @Id    @Column(name = "ID")    private String id;    @OneToOne(mappedBy = "impactRadio", fetch = FetchType.EAGER)    @JoinColumn(name = "IA_ID")    private ImpactRadioAmendment amendments;    @OneToOne(mappedBy = "impactRadio", fetch = FetchType.EAGER)    @JoinColumn(name = "IA_ID")    private ImpactRadioExamination examinations;}@Entity@Table(name = "IMP_Radio_EXAMINATION")public class ImpactRadioExamination implements Serializable, IEntity<String> {    /**     *      */    private static final long serialVersionUID = 1L;    @Id    @Column(name = "ID")    private String id;    @OneToOne(cascade = {CascadeType.PERSIST, CascadeType.REMOVE})    @JoinColumn(name = "IA_ID")    private ImpactRadio ImpactRadio;}But I have an exception when I try to run a Junit testCaused by: org.hibernate.AnnotationException: Unknown mappedBy in: com.tdk.persistence.fire.model.ImpactRadio.examinations, referenced property unknown: com.tdk.persistence.fire.model.ImpactRadioExamination.impactRadio