old_contents: import os
  
  
  def find(root):
      for current, dirs, files in os.walk(root):
          for file in files:
              yield os.path.join(current, file)
  
new_contents: import os
  
  
  def find(root):
      """Yield all found filepaths in provided directory recursively."""
      for current, dirs, files in os.walk(root):
          for file in files:
              yield os.path.join(current, file)
  
subject: Add docstrings for snippets.finder