ios – Swift 3.0：没有更多上下文,表达类型是不明确的？

private func makerequest<T where T:MappableNetwork>(method method: Alamofire.Method,url: String,parameters: [String: AnyObject]?,keyPath: String,handler: NetworkHandler<T>.handlerArray) -> request {

    let headers = [
        "Authorization": "",]

    return Alamofire
        .request(method,url,parameters: parameters,encoding: .URL,headers: headers)
        .validate()
        .responseArray(keyPath: keyPath) { (response: Alamofire.Response<[T],NSError>) in
            if let error = response.result.error {
                if let data = response.data {
                    let error = self.getError(data)
                    if error != nil {
                        handler(.Error(error: error!))
                        return
                    }
                }
                handler(.Error(error: error))
            } else if let objects = response.result.value {
                handler(.success(data: objects))
            }
    }
}