code: def __init__(self, label_name_list, tokenizer, end_symbol="<end>"):
      self.label_name_list = label_name_list
      self._tokenizer = tokenizer
      self.label_name_tree = get_label_name_tree(
          label_name_list, tokenizer, end_symbol
      )
      self._end_symbol = end_symbol
  
imports: from typing import Dict
label_desc: Use image node_id 1 to create a new PrefixTree object  with example: obj = PrefixTree(label_name_list, tokenizer, end_symbol)