content: Sub _toConsumableArray (arr)
                                                        If Array.isArray(arr) Then 
                                                          For i = 0
                                                          arr2 = Array(arr.length) To arr.length Step 1
                                                            arr2.i = arr.i
                                                          End For
                                                          Return arr2
                                                        Else
                                                          Return Array.from(arr)
                                                        End If
                                                      End Sub
                                                      
                                                      f.apply(undefined, _toConsumableArray(x).concat([
                                                        y,
                                                        z
                                                      ]))