docs: def get_class(class_string):
      """
      Get a class from a dotted string
      """
      split_string = class_string.encode('ascii').split('.')
      import_path = '.'.join(split_string[:-1])
      class_name = split_string[-1]
  
      if class_name:
          try:
              if import_path:
                  mod = __import__(import_path, globals(), {}, [class_name])
                  cls = getattr(mod, class_name)
              else:
                  cls = __import__(class_name, globals(), {})
              if cls:
                  return cls
          except (ImportError, AttributeError):
              pass
  
      return None