class_docstr: Abstract class used by `simplefilter` to create simple
  function filters on the fly. The `simplefilter` decorator
  automatically creates subclasses of this class for
  functions passed to it.
code: def __init__(self, **options):
      if not hasattr(self, "function"):
          raise TypeError(
              "%r used without bound function" % self.__class__.__name__
          )
      Filter.__init__(self, **options)
  
file_path: wandb/wandb/vendor/pygments/filter.py
label_desc: Use image node_id 1 to create a new FunctionFilter object from inherited base classes: Filter with example: obj = FunctionFilter()