What is the @ManyToMany relationship in Hibernate 7 and how do you map it?

@Entity
public class Student {
    @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id;
    private String name;

    @ManyToMany(fetch=FetchType.LAZY)
    @JoinTable(
        name="student_course",
        joinColumns=@JoinColumn(name="student_id"),
        inverseJoinColumns=@JoinColumn(name="course_id")
    )
    private Set<Course> courses = new HashSet<>();

    public void enrollIn(Course c) {
        courses.add(c);
        c.getStudents().add(this);  // keep both sides in sync!
    }
}

@Entity
public class Course {
    @Id @GeneratedValue(strategy=GenerationType.IDENTITY) private Long id;
    private String title;

    @ManyToMany(mappedBy="courses")  // inverse side
    private Set<Student> students = new HashSet<>();
}

// When you need extra columns on the join: use an explicit join entity!
@Entity public class Enrollment {
    @Id @GeneratedValue private Long id;
    @ManyToOne @JoinColumn(name="student_id") private Student student;
    @ManyToOne @JoinColumn(name="course_id")  private Course course;
    private LocalDate enrolledAt;  // impossible with @ManyToMany
    private String grade;
}