code: def _join_labels(self, label):
      return "#".join(label)
  
file_path: underthesea/underthesea/datasets/uit_absa_hotel/uit_absa_hotel.py
imports: from os.path import join
  import re
  from underthesea.data_fetcher import DataFetcher
  from underthesea.file_utils import DATASETS_FOLDER
label_desc: Use image node_id 2 for calling the UITABSAHotel obj's underlying member method code with example usage: obj._join_labels(label) and returns: str