code: def to_string(self):
      return self.__str__()
  
file_path: mindsdb/mindsdb/api/mongo/utilities/mongodb_query.py
imports: import datetime
  from json import JSONEncoder
  from bson import ObjectId
label_desc: Use image node_id 3 for calling the MongoQuery obj's underlying member method code with example usage: obj.to_string() and returns: self