docs: def _context_source_file_url(path_or_url):
      """
      Returns a URL for a remote or local context CSV file
      """
      if path_or_url.startswith('http'):
          # Remote CSV. Just return the URL
          return path_or_url
  
      if path_or_url.startswith('/'):
          # Absolute path
          return "file://" + path_or_url
  
      return "file://" + os.path.join(os.path.realpath(os.getcwd()), path_or_url)