code: def __str__(self) -> str:
      return (
          f"Total languages: {self.size()}\n"
          + f"Total families: {len(self.root.children)}\n"
      )
  
imports: import json
  from typing import Dict, List, Union
label_desc: Use image node_id 6 for calling the LanguageTree obj's underlying member method code with example usage: obj.__str__() and returns: unknown