old_contents: from os.path import dirname, join
  
  import numpy as np
  from typhon.spareice import Collocator, Dataset
  
  
  class TestCollocator:
      """Testing the dataset methods."""
  
      datasets = None
      refdir = join(dirname(__file__), 'reference')
new_contents: from os.path import dirname, join
  
  import numpy as np
  from typhon.spareice import Collocator, Dataset
  
  
  class TestCollocator:
      """Testing the dataset methods."""
  
      datasets = None
      refdir = join(dirname(__file__), 'reference')
  
subject: Add newline