writeLines method
Write lines to a file.
Implementation
Future<void> writeLines(
  List<String> lines, {
  Encoding encoding = utf8,
}) async {
  fs.unwrapIoFile(
    await fs.writeLines(
      fs.wrapIoFile(this),
      lines,
      encoding: encoding,
      useCrLf: _useCrLf,
    ),
  );
}