class_docstr: Base class for all models
      
class_docstr_tok: ["Base","class","for","all","models"]
code: def _process_prompt_tuning_input(self, inputs, batch):
      raise NotImplementedError
  
imports: import torch
  import torch.nn
  from textbox import CLM_MODELS, SEQ2SEQ_MODELS, RNN_MODELS, PLM_MODELS
  from transformers import EncoderDecoderModel
  import os
  from typing import List, Optional, Tuple, Union
  from transformers.modeling_utils import get_parameter_dtype
  from collections import OrderedDict
label_desc: Use image node_id 4 for calling the AbstractModel obj's underlying member method code with example usage: obj._process_prompt_tuning_input(inputs, batch) without return types