class_docstr: Abstract base class for all downstream task models
  Every new type of model must implement these methods.
  
  Source: FlairNLP
class_docstr_tok: ["Abstract","base","class","for","all","downstream","task","models","Every","new","type","of","model","must","implement","these","methods",".","Source",":","FlairNLP"]
code: def _fetch_model(model_name) -> str:
      return model_name
  
file_path: underthesea/underthesea/models/model.py
imports: import warnings
  from abc import abstractmethod
  from pathlib import Path
  from typing import Union
  import torch.nn
  from underthesea import file_utils
  from underthesea.utils import device
label_desc: Use image node_id 3 for calling the Model obj's underlying member method code with example usage: obj._fetch_model(model_name) and returns: model_name