code: def test_missing_datasets_raise_errors():
      """Raise errors when users forget to provide a dataset."""
      with pytest.raises(KeyError):
          eio.path_to_example("")
  
imports: import os
  import requests
  import pytest
  import numpy
  import rasterio
  import geopandas
  import earthpy.io
label_desc: Use image node_id 3 for calling a global function with example usage: test_missing_datasets_raise_errors() without return types