First trial to implement lenses for any type

Test.swift

public struct Lense<T: AnyObject,V: Any> {
    public let getter: () -> V
    public let setter: (value: V) -> ()
    
    init(getter: () -> V, setter: (value: V) -> ()) {
        self.getter = getter;
        self.setter = setter;
    }
}

public class Line {
    public var witdh: Int? = 2
    
    public func lenseForProperty(name: String) -> Lense<Line, Any>? {
        if (name == "witdh") {
//            let lense = Lense<Line, Int?>(getter: { self.witdh }, setter: { self.witdh = $1 })
            let lense = Lense<Line, Int?>(getter: { () -> Int? in
                return self.witdh
                }, setter: { (value) -> () in
                    self.witdh = value
            })
            return lense;
        }
        
        return nil
    }
}

let line = Line()
if let lense = line.lenseForProperty("value") {
    let witdh = lense.getter()
    print("Width: \(witdh)")
}