code: def test_grid_search():
      """Simple test for the multirun flag used e.g. to run a grid search."""
      result = subprocess.run(
          [
              "maze-run",
              "-cn",
              "conf_train",
              "configuration=test",
              "algorithm=ppo",
              "algorithm.lr=0.0001,0.0005",
              "+experiment=grid_search",
              "--multirun",
          ],
          capture_output=True,
      )
      assert result.returncode == 0, result.stderr.decode("utf-8")
  
imports: import subprocess
label_desc: Use image node_id 2 for calling a global function with example usage: test_grid_search() without return types