Codable_decode.swift

Alamofire.request(requestURL, method: .get, parameters: parameters, encoding: URLEncoding.default).responseData { response in
    if let data = response.result.value {
        let decoder = JSONDecoder()
        do {
            let apiResponse = try decoder.decode(ApiResponse.self, from: data)
            // Do stuff
        } catch {
            NSLog("Error while decoding")
            // Error handling           
        }
    }
}