class_docstr: Processes input, possibly statefully.
class_docstr_tok: ["Processes","input",",","possibly","statefully","."]
code: def as_serializable(self) -> "Filter":
      raise NotImplementedError
  
imports: import logging
  import threading
  import numpy
  import tree
  from ray.rllib.utils.annotations import DeveloperAPI
  from ray.rllib.utils.deprecation import Deprecated
  from ray.rllib.utils.numpy import SMALL_NUMBER
  from ray.rllib.utils.typing import TensorStructType
  from ray.rllib.utils.serialization import _serialize_ndarray, _deserialize_ndarray
  from ray.rllib.utils.deprecation import deprecation_warning
label_desc: Use image node_id 5 for calling the Filter obj's underlying member method code with example usage: obj.as_serializable() without return types