code: def test_save():
      filename = tempfile.mktemp()
      try:
          img = as_volume_img(data_file)
          save(filename, img)
      finally:
          if os.path.exists(filename):
              os.remove(filename)
  
file_path: nipy/nipy/labs/datasets/tests/test_converters.py
imports: import os
  import tempfile
  import nibabel
  import pytest
  from ..None import as_volume_img, save
label_desc: Use image node_id 3 for calling a global function with example usage: test_save() without return types