Make request method overridable

AppleLibs/Network/Requests/DataManager.swift

@@ -91,7 +91,7 @@ open class DataManager: NSObject, URLSessionDelegate
     @available(iOS 15.0, *)
     @available(macCatalyst 15.0.0, *)
     @discardableResult
-    public func request(request r: Request, dataMapper: DataMapper? = nil, sender: Any? = nil) async throws -> Any? {
+    open func request(request r: Request, dataMapper: DataMapper? = nil, sender: Any? = nil) async throws -> Any? {
         let request = delegate?.manipulateRequest(request: r) ?? r
         
         guard let req: URLRequest = createUrlRequest(request: request) else {