addFiles method
Implementation
Future<MultipartFile> addFiles(String name, File file) async {
var type = mime(file.path);
var types = type?.split('/');
var result;
if (types != null && types.length >= 2) {
result = await http.MultipartFile.fromPath('$name', '${file.path}', contentType: MediaType(types[0], types[1]));
files.add(result);
} else {
result = await http.MultipartFile.fromPath('$name', '${file.path}');
files.add(result);
}
return result;
}