code: def test_mnist():
      _ = datasets.MNIST(k=8, noise_level=0.1)
  
file_path: spektral/tests/test_datasets.py
imports: from spektral import datasets
  from spektral.data import BatchLoader, DisjointLoader, SingleLoader
label_desc: Use image node_id 5 for calling a global function with example usage: test_mnist() without return types