Spring Boot + JPA (Hibernate) - how to remove nested entities with OneToMany bidirectional mapping

Question

I want to remove points and PointOperations in Point so to remove such entities (bidirectional mapping, OneToMany) I need to use this approach: Spring Data REST + JPA remove from OneToMany collection [not owner side]

public class Path {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @OneToMany(mappedBy = "path", cascade = CascadeType.ALL, orphanRemoval = true)
    List<Point> points;

    public void removePoint(Point point) {
        point.setPath(null);
        this.getPoints().remove(point);
    }

public class Point{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @OneToMany(mappedBy = "point", cascade = CascadeType.ALL, fetch = FetchType.LAZY, orphanRemoval = true)
    private List<PointOperation> operations;

    @ManyToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @JoinColumn(name = "path_id", foreignKey = @ForeignKey(name = "FK_point_path"), nullable = false)
    private Path path;

    public void removePointOperation(PointOperation pointOperation) {
        pointOperation.setPoint(null);
        this.getOperations().remove(pointOperation);
    }

public class PointOperation {

    @Column(nullable = false, updatable = false)
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;

    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "point_id", foreignKey = @ForeignKey(name = "FK_point_point_operation"), nullable = false)
    private Point point;


    @OneToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "window_id", foreignKey = @ForeignKey(name = "FK_point_window"))
    private Window window;
}

This approach seems to be working - I have to avoid ConcurrentModificationException:

if (window.getPath().getPoints() != null) {
            List<Point> copiedPoints = new ArrayList<>(window.getPath().getPoints());
            for (Point point : copyPoints) {
                if (point.getOperations() != null && !point.getOperations().isEmpty()) {
                    List<PointOperation> pointOperations = new ArrayList(point.getOperations());
                    for (PointOperation pointOperation : pointOperations) {
                        point.removePointOperation(pointOperation);
                    }
                }
                window.getPath().removePoint(point);
            }
        }

But my question is if this approach is correct? I want t remove nested entities that are in bidirectional mapping