class_docstr: This is a helper for replicating the history object
  behavior of Keras to make Talos Scan() API consistent between
  the two backends.
code: def append_history(self, history_data, label):
      if label not in self.history.keys():
          self.history[label] = []
      self.history[label].append(history_data)
  
file_path: talos/talos/utils/torch_history.py
label_desc: Use image node_id 3 for calling the TorchHistory obj's underlying member method code with example usage: obj.append_history(history_data, label) without return types