Pretty print extension for Alamofire Request

AlamofirePrintable.swift

extension Alamofire.Request {
    func responseDebugPrint() -> Self {
        return responseJSON() {
            response in
            if let  JSON: AnyObject = response.result.value,
                    JSONData = try? NSJSONSerialization.dataWithJSONObject(JSON, options: .PrettyPrinted),
                    prettyString = NSString(data: JSONData, encoding: NSUTF8StringEncoding) {
             print(prettyString)
            } else if let error = response.result.error {
                print("Error Debug Print: \(error.localizedDescription)")
            }
        }
    }
}

Dude, it's giving me error on line 3 , use of unresolved identifier "responseJSON"

extension DataRequest {

    @discardableResult
    func prettyPrintedJsonResponse() -> Self {
        return responseJSON { (response) in
            switch response.result {
            case .success(let result):
                if let data = try? JSONSerialization.data(withJSONObject: result, options: .prettyPrinted),
                    let text = String(data: data, encoding: .utf8) {
                    print("📗 prettyPrinted JSON response: \n \(text)")
                }
            case .failure: break
            }
        }
    }
}

@smaljaar How to use it?