Keypath_DTO_Entity.swift

struct TableDTO: Codable {
    let width: Int
    let height: Int
    let material: String
    
    enum CodingKeys: String, CodingKey {
        case width
        case height
        case material
    }
}

class TableEntity: NSManagedObject {
    
}

extension TableEntity {
    @NSManaged var width: Int
    @NSManaged var height: Int
    @NSManaged var material: String
}