code: def get_slots(self, idx):
      return copy.deepcopy(self.slots[idx])
  
file_path: DIG/dig/ggraph/method/JTVAE/fast_jtnn/vocab.py
imports: import rdkit
  import rdkit.Chem
  import copy
label_desc: Use image node_id 4 for calling the Vocab obj's underlying member method code with example usage: obj.get_slots(idx) and returns: copy