class_docstr: Interface for any component which will run in a graph.
docstr: Determines which languages this component can work with.
  
  Returns: A list of supported languages, or `None` to signify all are supported.
docstr_tok: ["Determines","which","languages","this","component","can","work","with",".","Returns",":","A","list","of","supported","languages",",","or","`","None","`","to","signify","all","are","supported","."]
code: def supported_languages() -> Optional[List[Text]]:
      """Determines which languages this component can work with.
  
      Returns: A list of supported languages, or `None` to signify all are supported.
      """
      return None
  
file_path: rasa/data/test_classes/graph_component_interface.py
imports: from __future__ import annotations
  from abc import ABC, abstractmethod
  from typing import List, Type, Dict, Text, Any, Optional
  from rasa.engine.graph import ExecutionContext
  from rasa.engine.storage.resource import Resource
  from rasa.engine.storage.storage import ModelStorage
label_desc: Use image node_id 5 for calling the GraphComponent obj's underlying member method code with example usage: obj.supported_languages() and returns: None