code: def test_valid_datasets_get_returned():
      """If users give a valid dataset name, return a valid path."""
      epsg_path = eio.path_to_example("epsg.json")
      assert os.path.isfile(epsg_path)
  
imports: import os
  import requests
  import pytest
  import numpy
  import rasterio
  import geopandas
  import earthpy.io
label_desc: Use image node_id 4 for calling a global function with example usage: test_valid_datasets_get_returned() without return types