code: def query(self) -> str:
      queries = self.get_path(self.query_path)
      query = self.query_delim.join(queries)
  
      # check for errors
      if not query:
          raise MissingQuery
  
      return eval(self.query_prep)(query)
  
imports: import re
  import collections.abc
  from typing import Optional
  from nboost.helpers import get_jsonpath, set_jsonpath, JSONTYPES, flatten
  from nboost.exceptions import *
  from nboost import defaults
label_desc: Use image node_id 4 for calling the RequestDelegate obj's underlying member method code with example usage: obj.query() and returns: eval