code: def bspan_to_DBpointer(self, bspan, turn_domain):
      constraint_dict = self.bspan_to_constraint_dict(bspan)
      # print(constraint_dict)
      matnums = self.db.get_match_num(constraint_dict)
      match_dom = (
          turn_domain[0] if len(turn_domain) == 1 else turn_domain[1]
      )
      match_dom = (
          match_dom[1:-1] if match_dom.startswith("[") else match_dom
      )
      match = matnums[match_dom]
      vector = self.db.addDBIndicator(match_dom, match)
      return vector
  
file_path: TextBox/textbox/evaluator/utils/multiwoz/reader.py
imports: import logging
  import json
  import spacy
  from collections import OrderedDict
  from .None import utils
  from .None import ontology
  from .db_ops import MultiWozDB
label_desc: Use image node_id 5 for calling the MultiWozReader obj's underlying member method code with example usage: obj.bspan_to_DBpointer(bspan, turn_domain) and returns: vector