注释如何只序列化一个对象的一个​​属性，而该对象是另一对象的属性？

Question

public class Alumno extends Persona
{
    private static final long serialVersionUID = -5168392367836972065L;
    @ManyToOne
    private Profesor tutor; 
    @ManyToOne
    private Curso curso;
    @OneToMany(mappedBy = "alumno", cascade = CascadeType.ALL, 
        orphanRemoval = true)
    private Set<Matricula> matriculas = new HashSet<>();

我只需要发送一个json并且属性curso仅需要curso.codigo codigo是String。