docstr: Return all supported relations by this class
  
  Returns:
      List[RelationType]
docstr_tok: ["Return","all","supported","relations","by","this","class","Returns",":","List","[","RelationType","]"]
code: def get_supported_relations() -> List[RelationType]:
      """
      Return all supported relations by this class
  
      Returns:
          List[RelationType]
      """
      return [RelationType.WITHIN_DOC_COREF]
  
file_path: nlp-architect/nlp_architect/data/cdc_resources/relations/within_doc_coref_extraction.py
imports: import logging
  import os
  from typing import List, Set
  from nlp_architect.common.cdc.mention_data import MentionData
  from nlp_architect.data.cdc_resources.relations.relation_extraction import RelationExtraction
  from nlp_architect.data.cdc_resources.relations.relation_types_enums import RelationType
  from nlp_architect.utils.io import load_json_file
label_desc: Use image node_id 8 for calling the WithinDocCoref obj's underlying member method code with example usage: obj.get_supported_relations() and returns: list