class_docstr: Holds the output of the [`~SequenceFeatureExtractor.pad`] and feature extractor specific `__call__` methods.
  
  This class is derived from a python dictionary and can be used as a dictionary.
  
  Args:
      data (`dict`, *optional*):
          Dictionary of lists/arrays/tensors returned by the __call__/pad methods ('input_values', 'attention_mask',
          etc.).
      tensor_type (`Union[None, str, TensorType]`, *optional*):
          You can give a tensor_type here to convert the lists of integers in PyTorch/TensorFlow/Numpy Tensors at
          initialization.
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code: def items(self):
      return self.data.items()
  
imports: import copy
  import json
  import os
  import warnings
  from collections import UserDict
  from typing import TYPE_CHECKING, Any, Dict, Optional, Tuple, Union
  import numpy
  from .dynamic_module_utils import custom_object_save
  from .utils import FEATURE_EXTRACTOR_NAME, PushToHubMixin, TensorType, add_model_info_to_auto_map, cached_file, copy_func, download_url, is_flax_available, is_jax_tensor, is_numpy_array, is_offline_mode, is_remote_url, is_tf_available, is_torch_available, is_torch_device, is_torch_dtype, logging, requires_backends
label_desc: Use image node_id 8 for calling the BatchFeature obj's underlying member method code with example usage: obj.items() and returns: self