How to call function with completion handler and parameters - swift

Question

I have a func getData(completed: #escaping ()->()) that creates alamofire request with completion handler in one class. When alamofire ends it job, inside of this function i call completed() to notify that function ended its work. This func is called in other viewcontroller after button tap, but without completion handler, and then inside of this call i reload tableview with downloaded data as below.
Now i want to add to this func additional parameters to allow user modify URL of alamofire request, and get custom response. Parameters will be setted in other textfields. But now when i call downloadRepositories() i can't omit calling completion parameter.
How can i avoid calling completion handler in it or what other
completion handler should i implement?
Current alamofire request
class DataClass {
func getData(completed: #escaping () -> ()){
//alamofire request
Alamofire.request(url).responseJSON{
//reponse
completed()
}
}
And it's implementation
class OtherVC {
var dataClass = DataClass()
#objc func searchBtnTapped(sender: UIButton!){
dataclass.getData(){
self.TableView.reloadData()
}
}
}
What i would like to do
class DataClass {
func downloadRepositories(completed: #escaping () -> (), parameter1: String, parameter2: String) {
let parameters: Parameters = [ "parameterA": parameter, "parameterB": parameter2 ]
Alamofire.request(url, parameters: parameters).responseJSON{
//response
completed()
}
Implementation of modified func
class OtherVC {
var dataClass = DataClass()
#objc func searchBtnTapped(sender: UIButton!){
dataclass.getData(parameter1: someTextField.text, parameter2: someTextField2.text){
self.TableView.reloadData()
}
}
}
Of course I know that is not possible to pass parameters in func call like this, but how can do this other way?

Answer 1

Use like this:
func downloadRepositories(parameter1: String, parameter2: String, completed: #escaping () -> ()) {
let parameters: Parameters = [ "parameterA": parameter, "parameterB": parameter2 ]
Alamofire.request(url, parameters: parameters).responseJSON {
//response
completed()
}

Answer 2

You are on the right track)
If you want call func like this:
dataclass.getData(parameter1: someTextField.text, parameter2: someTextField2.text){
self.TableView.reloadData()
}
You just need change parameters order like this:
func downloadRepositories(parameter1: String, parameter2: String, completed: #escaping () -> ())
If i understand right and you want use Trailing Closures, then that's all