from<U>  static method 
Creates an array from an array-like or iterable object.
Implementation
static _i3.BigUint64Array from<U>(
  _i2.List<U> arrayLike,
  _i2.int Function(
    U,
    _i2.num,
  ) mapfn, [
  _i2.dynamic thisArg,
]) =>
    _i5.callMethod(
      _i6.target30,
      'from',
      [
        arrayLike,
        _i5.allowInterop(mapfn),
        thisArg,
      ],
    );