Eureka Form within UIAlertController

sample.swift

    override func viewDidLoad() {
        form
            +++ Section("Testing")

                <<< ButtonRow("alert") { (row) in
                    row.title = "Eureka Alert"
                }
                .onCellSelection { [weak self] (cell, row) in
                    let vc = FormViewController()
                    
                    vc.form
                        +++ Section("Section 1") { section in
                                section.header?.height = { return 36 }
                            }
                        
                            <<< LabelRow() { row in
                                row.title = "Label"
                                row.value = "Value"
                            }
                            <<< SwitchRow() { row in
                                row.title = "Switch 1"
                            }
                            <<< SwitchRow() { row in
                                row.title = "Switch 2"
                            }
                        +++ Section("Section 2") { section in
                                section.header?.height = { return 18 }
                            }
                        
                            <<< SwitchRow() { row in
                                row.title = "Switch 3
                            }
                            <<< SwitchRow() { row in
                                row.title = "Switch 4"
                            }
                    vc.edgesForExtendedLayout = []
                    vc.preferredContentSize = CGSize(width: 300, height: 252)
                    
                    let alert = UIAlertController(title: "Alert Title",
                                                  message: "Alert Message Text",
                                                  preferredStyle: .alert)
                    
                    alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
                    alert.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))

                    //  This call is potentially problematic since it exploits an undocumented API but I cannot
                    //  find another way to make this work.
                    alert.setValue(vc, forKey: "contentViewController")
                    
                    self?.present(alert,
                                  animated: true,
                                  completion: nil)
                }
    }