toJson method
Implementation
Map<String, dynamic> toJson() => {
'id': id,
'position': [position.dx, position.dy],
'size': [size.width, size.height],
'min_size': [minSize.width, minSize.height],
'type': type,
'z_order': zOrder,
'parent_id': parentId,
'children_ids': childrenIds,
'connections': connections,
'dynamic_data': data?.toJson(),
};