ViewController.swift

// ViewController.swift
func call(user: String) {
    gitHubProvider.request(.userProfile(user)) { (result) in
      switch result {
      case .success(let data):
        if let jsonData = try? data.mapJSON() {
          print(jsonData)
        } else {
          print("error parsing to JSON")
        }
      case .failure(let error):
        print(error.localizedDescription)
      }
    }
  }