void TinyGLTF::SetImageWriter(WriteImageDataFunction func, void *user_data) {
  WriteImageData = func;
  write_image_user_data_ = user_data;
}
void TinyGLTF::SetImageWriter(WriteImageDataFunction func, void *user_data) {
  WriteImageData = func;
  write_image_user_data_ = user_data;
}