class_docstr: Document Classification with Huggingface backbones. Inherit from HFAutoModelForTextPrediction.
code: def text_attention_mask_key(self):
      return f"{self.prefix}_{ATTENTION_MASK}"
  
file_path: autogluon/multimodal/src/autogluon/multimodal/models/document_transformer.py
imports: import inspect
  import logging
  from typing import Callable, Dict, List, Optional, Tuple, Union, cast
  from transformers import logging
  from ..constants import ATTENTION_MASK, AUTOMM, BBOX, COLUMN, COLUMN_FEATURES, FEATURES, IMAGE, INPUT_IDS, LABEL, LOGITS, MASKS, PIXEL_VALUES, TEXT_SEGMENT_IDS, TEXT_TOKEN_IDS, TEXT_VALID_LENGTH, TOKEN_TYPE_IDS
  from .huggingface_text import HFAutoModelForTextPrediction
  from .utils import get_column_features
label_desc: Use image node_id 3 for calling the DocumentTransformer obj's underlying member method code with example usage: obj.text_attention_mask_key() and returns: self, str, ATTENTION_MASK