code: def download_mpca_data(save_path):
      # Downloading MPCA data for tests/embed/test_factorization.py test
      url = "https://github.com/pykale/data/raw/main/videos/gait/mpca_baseline.mat"
      download_file_by_url(url, save_path, "baseline.mat", "mat")
  
file_path: pykale/tests/download_test_data.py
imports: from pathlib import Path
  from tdc.multi_pred import DTI
  from torchvision.datasets import CIFAR10, CIFAR100, MNIST, SVHN
  from kale.loaddata.mnistm import MNISTM
  from kale.loaddata.usps import USPS
  from kale.prepdata.image_transform import get_transform
  from kale.utils.download import download_file_by_url
label_desc: Use image node_id 4 for calling a global function with example usage: download_mpca_data(save_path) without return types