call method

Implementation

@override
Object? call(Interpreter interpreter, List<Object?> arguments,
    Map<Symbol, Object?> namedArguments) {
  var source = namedArguments[const Symbol('source')];
  if (source == null) {
    throw "source required in ImagePicker";
  }
  return picker
      .pickVideo(
    source: source as ImageSource,
  )
      .then((value) {
    if (value == null) return value;
    return XfileIns(value);
  });
}