# coding=utf-8
# Copyright 2018 The HuggingFace Inc. team.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""" Auto Model class. """


import warnings
from collections import OrderedDict

from .configuration_auto import (
    AlbertConfig,
    AutoConfig,
    BertConfig,
    CamembertConfig,
    CTRLConfig,
    DistilBertConfig,
    ElectraConfig,
    FlaubertConfig,
    FunnelConfig,
    GPT2Config,
    LongformerConfig,
    MobileBertConfig,
    OpenAIGPTConfig,
    RobertaConfig,
    T5Config,
    TransfoXLConfig,
    XLMConfig,
    XLMRobertaConfig,
    XLNetConfig,
    replace_list_option_in_docstrings,
)
from .configuration_utils import PretrainedConfig
from .file_utils import add_start_docstrings
from .modeling_tf_albert import (
    TFAlbertForMaskedLM,
    TFAlbertForMultipleChoice,
    TFAlbertForPreTraining,
    TFAlbertForQuestionAnswering,
    TFAlbertForSequenceClassification,
    TFAlbertForTokenClassification,
    TFAlbertModel,
)
from .modeling_tf_bert import (
    TFBertForMaskedLM,
    TFBertForMultipleChoice,
    TFBertForPreTraining,
    TFBertForQuestionAnswering,
    TFBertForSequenceClassification,
    TFBertForTokenClassification,
    TFBertLMHeadModel,
    TFBertModel,
)
from .modeling_tf_camembert import (
    TFCamembertForMaskedLM,
    TFCamembertForMultipleChoice,
    TFCamembertForQuestionAnswering,
    TFCamembertForSequenceClassification,
    TFCamembertForTokenClassification,
    TFCamembertModel,
)
from .modeling_tf_ctrl import TFCTRLLMHeadModel, TFCTRLModel
from .modeling_tf_distilbert import (
    TFDistilBertForMaskedLM,
    TFDistilBertForMultipleChoice,
    TFDistilBertForQuestionAnswering,
    TFDistilBertForSequenceClassification,
    TFDistilBertForTokenClassification,
    TFDistilBertModel,
)
from .modeling_tf_electra import (
    TFElectraForMaskedLM,
    TFElectraForMultipleChoice,
    TFElectraForPreTraining,
    TFElectraForQuestionAnswering,
    TFElectraForSequenceClassification,
    TFElectraForTokenClassification,
    TFElectraModel,
)
from .modeling_tf_flaubert import (
    TFFlaubertForMultipleChoice,
    TFFlaubertForQuestionAnsweringSimple,
    TFFlaubertForSequenceClassification,
    TFFlaubertForTokenClassification,
    TFFlaubertModel,
    TFFlaubertWithLMHeadModel,
)
from .modeling_tf_funnel import (
    TFFunnelForMaskedLM,
    TFFunnelForMultipleChoice,
    TFFunnelForPreTraining,
    TFFunnelForQuestionAnswering,
    TFFunnelForSequenceClassification,
    TFFunnelForTokenClassification,
    TFFunnelModel,
)
from .modeling_tf_gpt2 import TFGPT2LMHeadModel, TFGPT2Model
from .modeling_tf_longformer import TFLongformerForMaskedLM, TFLongformerForQuestionAnswering, TFLongformerModel
from .modeling_tf_mobilebert import (
    TFMobileBertForMaskedLM,
    TFMobileBertForMultipleChoice,
    TFMobileBertForPreTraining,
    TFMobileBertForQuestionAnswering,
    TFMobileBertForSequenceClassification,
    TFMobileBertForTokenClassification,
    TFMobileBertModel,
)
from .modeling_tf_openai import TFOpenAIGPTLMHeadModel, TFOpenAIGPTModel
from .modeling_tf_roberta import (
    TFRobertaForMaskedLM,
    TFRobertaForMultipleChoice,
    TFRobertaForQuestionAnswering,
    TFRobertaForSequenceClassification,
    TFRobertaForTokenClassification,
    TFRobertaModel,
)
from .modeling_tf_t5 import TFT5ForConditionalGeneration, TFT5Model
from .modeling_tf_transfo_xl import TFTransfoXLLMHeadModel, TFTransfoXLModel
from .modeling_tf_xlm import (
    TFXLMForMultipleChoice,
    TFXLMForQuestionAnsweringSimple,
    TFXLMForSequenceClassification,
    TFXLMForTokenClassification,
    TFXLMModel,
    TFXLMWithLMHeadModel,
)
from .modeling_tf_xlm_roberta import (
    TFXLMRobertaForMaskedLM,
    TFXLMRobertaForMultipleChoice,
    TFXLMRobertaForQuestionAnswering,
    TFXLMRobertaForSequenceClassification,
    TFXLMRobertaForTokenClassification,
    TFXLMRobertaModel,
)
from .modeling_tf_xlnet import (
    TFXLNetForMultipleChoice,
    TFXLNetForQuestionAnsweringSimple,
    TFXLNetForSequenceClassification,
    TFXLNetForTokenClassification,
    TFXLNetLMHeadModel,
    TFXLNetModel,
)
from .utils import logging


logger = logging.get_logger(__name__)


TF_MODEL_MAPPING = OrderedDict(
    [
        (T5Config, TFT5Model),
        (DistilBertConfig, TFDistilBertModel),
        (AlbertConfig, TFAlbertModel),
        (CamembertConfig, TFCamembertModel),
        (XLMRobertaConfig, TFXLMRobertaModel),
        (LongformerConfig, TFLongformerModel),
        (RobertaConfig, TFRobertaModel),
        (BertConfig, TFBertModel),
        (OpenAIGPTConfig, TFOpenAIGPTModel),
        (GPT2Config, TFGPT2Model),
        (MobileBertConfig, TFMobileBertModel),
        (TransfoXLConfig, TFTransfoXLModel),
        (XLNetConfig, TFXLNetModel),
        (FlaubertConfig, TFFlaubertModel),
        (XLMConfig, TFXLMModel),
        (CTRLConfig, TFCTRLModel),
        (ElectraConfig, TFElectraModel),
        (FunnelConfig, TFFunnelModel),
    ]
)

TF_MODEL_FOR_PRETRAINING_MAPPING = OrderedDict(
    [
        (T5Config, TFT5ForConditionalGeneration),
        (DistilBertConfig, TFDistilBertForMaskedLM),
        (AlbertConfig, TFAlbertForPreTraining),
        (CamembertConfig, TFCamembertForMaskedLM),
        (XLMRobertaConfig, TFXLMRobertaForMaskedLM),
        (RobertaConfig, TFRobertaForMaskedLM),
        (BertConfig, TFBertForPreTraining),
        (OpenAIGPTConfig, TFOpenAIGPTLMHeadModel),
        (GPT2Config, TFGPT2LMHeadModel),
        (MobileBertConfig, TFMobileBertForPreTraining),
        (TransfoXLConfig, TFTransfoXLLMHeadModel),
        (XLNetConfig, TFXLNetLMHeadModel),
        (FlaubertConfig, TFFlaubertWithLMHeadModel),
        (XLMConfig, TFXLMWithLMHeadModel),
        (CTRLConfig, TFCTRLLMHeadModel),
        (ElectraConfig, TFElectraForPreTraining),
        (FunnelConfig, TFFunnelForPreTraining),
    ]
)

TF_MODEL_WITH_LM_HEAD_MAPPING = OrderedDict(
    [
        (T5Config, TFT5ForConditionalGeneration),
        (DistilBertConfig, TFDistilBertForMaskedLM),
        (AlbertConfig, TFAlbertForMaskedLM),
        (CamembertConfig, TFCamembertForMaskedLM),
        (XLMRobertaConfig, TFXLMRobertaForMaskedLM),
        (LongformerConfig, TFLongformerForMaskedLM),
        (RobertaConfig, TFRobertaForMaskedLM),
        (BertConfig, TFBertForMaskedLM),
        (OpenAIGPTConfig, TFOpenAIGPTLMHeadModel),
        (GPT2Config, TFGPT2LMHeadModel),
        (MobileBertConfig, TFMobileBertForMaskedLM),
        (TransfoXLConfig, TFTransfoXLLMHeadModel),
        (XLNetConfig, TFXLNetLMHeadModel),
        (FlaubertConfig, TFFlaubertWithLMHeadModel),
        (XLMConfig, TFXLMWithLMHeadModel),
        (CTRLConfig, TFCTRLLMHeadModel),
        (ElectraConfig, TFElectraForMaskedLM),
        (FunnelConfig, TFFunnelForMaskedLM),
    ]
)

TF_MODEL_FOR_CAUSAL_LM_MAPPING = OrderedDict(
    [
        (BertConfig, TFBertLMHeadModel),
        (OpenAIGPTConfig, TFOpenAIGPTLMHeadModel),
        (GPT2Config, TFGPT2LMHeadModel),
        (TransfoXLConfig, TFTransfoXLLMHeadModel),
        (XLNetConfig, TFXLNetLMHeadModel),
        (
            XLMConfig,
            TFXLMWithLMHeadModel,
        ),  # XLM can be MLM and CLM => model should be split similar to BERT; leave here for now
        (CTRLConfig, TFCTRLLMHeadModel),
    ]
)

TF_MODEL_FOR_MASKED_LM_MAPPING = OrderedDict(
    [
        (DistilBertConfig, TFDistilBertForMaskedLM),
        (AlbertConfig, TFAlbertForMaskedLM),
        (CamembertConfig, TFCamembertForMaskedLM),
        (XLMRobertaConfig, TFXLMRobertaForMaskedLM),
        (LongformerConfig, TFLongformerForMaskedLM),
        (RobertaConfig, TFRobertaForMaskedLM),
        (BertConfig, TFBertForMaskedLM),
        (MobileBertConfig, TFMobileBertForMaskedLM),
        (FlaubertConfig, TFFlaubertWithLMHeadModel),
        (XLMConfig, TFXLMWithLMHeadModel),
        (ElectraConfig, TFElectraForMaskedLM),
        (FunnelConfig, TFFunnelForMaskedLM),
    ]
)

TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING = OrderedDict([(T5Config, TFT5ForConditionalGeneration)])

TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING = OrderedDict(
    [
        (DistilBertConfig, TFDistilBertForSequenceClassification),
        (AlbertConfig, TFAlbertForSequenceClassification),
        (CamembertConfig, TFCamembertForSequenceClassification),
        (XLMRobertaConfig, TFXLMRobertaForSequenceClassification),
        (RobertaConfig, TFRobertaForSequenceClassification),
        (BertConfig, TFBertForSequenceClassification),
        (XLNetConfig, TFXLNetForSequenceClassification),
        (MobileBertConfig, TFMobileBertForSequenceClassification),
        (FlaubertConfig, TFFlaubertForSequenceClassification),
        (XLMConfig, TFXLMForSequenceClassification),
        (ElectraConfig, TFElectraForSequenceClassification),
        (FunnelConfig, TFFunnelForSequenceClassification),
    ]
)

TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING = OrderedDict(
    [
        (DistilBertConfig, TFDistilBertForQuestionAnswering),
        (AlbertConfig, TFAlbertForQuestionAnswering),
        (CamembertConfig, TFCamembertForQuestionAnswering),
        (XLMRobertaConfig, TFXLMRobertaForQuestionAnswering),
        (LongformerConfig, TFLongformerForQuestionAnswering),
        (RobertaConfig, TFRobertaForQuestionAnswering),
        (BertConfig, TFBertForQuestionAnswering),
        (XLNetConfig, TFXLNetForQuestionAnsweringSimple),
        (MobileBertConfig, TFMobileBertForQuestionAnswering),
        (FlaubertConfig, TFFlaubertForQuestionAnsweringSimple),
        (XLMConfig, TFXLMForQuestionAnsweringSimple),
        (ElectraConfig, TFElectraForQuestionAnswering),
        (FunnelConfig, TFFunnelForQuestionAnswering),
    ]
)

TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING = OrderedDict(
    [
        (DistilBertConfig, TFDistilBertForTokenClassification),
        (AlbertConfig, TFAlbertForTokenClassification),
        (CamembertConfig, TFCamembertForTokenClassification),
        (FlaubertConfig, TFFlaubertForTokenClassification),
        (XLMConfig, TFXLMForTokenClassification),
        (XLMRobertaConfig, TFXLMRobertaForTokenClassification),
        (RobertaConfig, TFRobertaForTokenClassification),
        (BertConfig, TFBertForTokenClassification),
        (MobileBertConfig, TFMobileBertForTokenClassification),
        (XLNetConfig, TFXLNetForTokenClassification),
        (ElectraConfig, TFElectraForTokenClassification),
        (FunnelConfig, TFFunnelForTokenClassification),
    ]
)

TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING = OrderedDict(
    [
        (CamembertConfig, TFCamembertForMultipleChoice),
        (XLMConfig, TFXLMForMultipleChoice),
        (XLMRobertaConfig, TFXLMRobertaForMultipleChoice),
        (RobertaConfig, TFRobertaForMultipleChoice),
        (BertConfig, TFBertForMultipleChoice),
        (DistilBertConfig, TFDistilBertForMultipleChoice),
        (MobileBertConfig, TFMobileBertForMultipleChoice),
        (XLNetConfig, TFXLNetForMultipleChoice),
        (FlaubertConfig, TFFlaubertForMultipleChoice),
        (AlbertConfig, TFAlbertForMultipleChoice),
        (ElectraConfig, TFElectraForMultipleChoice),
        (FunnelConfig, TFFunnelForMultipleChoice),
    ]
)


TF_AUTO_MODEL_PRETRAINED_DOCSTRING = r"""

        The model class to instantiate is selected based on the :obj:`model_type` property of the config object
        (either passed as an argument or loaded from :obj:`pretrained_model_name_or_path` if possible), or when it's
        missing, by falling back to using pattern matching on :obj:`pretrained_model_name_or_path`:

        List options

        The model is set in evaluation mode by default using ``model.eval()`` (so for instance, dropout modules are
        deactivated). To train the model, you should first set it back in training mode with ``model.train()``

        Args:
            pretrained_model_name_or_path:
                Can be either:

                    - A string with the `shortcut name` of a pretrained model to load from cache or download, e.g.,
                      ``bert-base-uncased``.
                    - A string with the `identifier name` of a pretrained model that was user-uploaded to our S3, e.g.,
                      ``dbmdz/bert-base-german-cased``.
                    - A path to a `directory` containing model weights saved using
                      :func:`~transformers.PreTrainedModel.save_pretrained`, e.g., ``./my_model_directory/``.
                    - A path or url to a `PyTorch state_dict save file` (e.g, ``./pt_model/pytorch_model.bin``). In
                      this case, ``from_pt`` should be set to :obj:`True` and a configuration object should be provided
                      as ``config`` argument. This loading path is slower than converting the PyTorch model in a
                      TensorFlow model using the provided conversion scripts and loading the TensorFlow model
                      afterwards.
            model_args (additional positional arguments, `optional`):
                Will be passed along to the underlying model ``__init__()`` method.
            config (:class:`~transformers.PretrainedConfig`, `optional`):
                Configuration for the model to use instead of an automatically loaded configuation. Configuration can
                be automatically loaded when:

                    - The model is a model provided by the library (loaded with the `shortcut name` string of a
                      pretrained model).
                    - The model was saved using :meth:`~transformers.PreTrainedModel.save_pretrained` and is reloaded
                      by suppling the save directory.
                    - The model is loaded by suppling a local directory as ``pretrained_model_name_or_path`` and a
                      configuration JSON file named `config.json` is found in the directory.
            state_dict (`Dict[str, torch.Tensor]`, `optional`):
                A state dictionary to use instead of a state dictionary loaded from saved weights file.

                This option can be used if you want to create a model from a pretrained configuration but load your own
                weights. In this case though, you should check if using
                :func:`~transformers.PreTrainedModel.save_pretrained` and
                :func:`~transformers.PreTrainedModel.from_pretrained` is not a simpler option.
            cache_dir (:obj:`str`, `optional`):
                Path to a directory in which a downloaded pretrained model configuration should be cached if the
                standard cache should not be used.
            from_tf (:obj:`bool`, `optional`, defaults to :obj:`False`):
                Load the model weights from a TensorFlow checkpoint save file (see docstring of
                ``pretrained_model_name_or_path`` argument).
            force_download (:obj:`bool`, `optional`, defaults to :obj:`False`):
                Whether or not to force the (re-)download of the model weights and configuration files, overriding the
                cached versions if they exist.
            resume_download (:obj:`bool`, `optional`, defaults to :obj:`False`):
                Whether or not to delete incompletely received files. Will attempt to resume the download if such a
                file exists.
            proxies (:obj:`Dict[str, str], `optional`):
                A dictionary of proxy servers to use by protocol or endpoint, e.g.,
                :obj:`{'http': 'foo.bar:3128', 'http://hostname': 'foo.bar:4012'}`. The proxies are used on each
                request.
            output_loading_info(:obj:`bool`, `optional`, defaults to :obj:`False`):
                Whether ot not to also return a dictionnary containing missing keys, unexpected keys and error
                messages.
            local_files_only(:obj:`bool`, `optional`, defaults to :obj:`False`):
                Whether or not to only look at local files (e.g., not try doanloading the model).
            use_cdn(:obj:`bool`, `optional`, defaults to :obj:`True`):
                Whether or not to use Cloudfront (a Content Delivery Network, or CDN) when searching for the model on
                our S3 (faster). Should be set to :obj:`False` for checkpoints larger than 20GB.
            kwargs (additional keyword arguments, `optional`):
                Can be used to update the configuration object (after it being loaded) and initiate the model (e.g.,
                :obj:`output_attentions=True`). Behaves differently depending on whether a ``config`` is provided or
                automatically loaded:

                    - If a configuration is provided with ``config``, ``**kwargs`` will be directly passed to the
                      underlying model's ``__init__`` method (we assume all relevant updates to the configuration have
                      already been done)
                    - If a configuration is not provided, ``kwargs`` will be first passed to the configuration class
                      initialization function (:func:`~transformers.PretrainedConfig.from_pretrained`). Each key of
                      ``kwargs`` that corresponds to a configuration attribute will be used to override said attribute
                      with the supplied ``kwargs`` value. Remaining keys that do not correspond to any configuration
                      attribute will be passed to the underlying model's ``__init__`` function.
"""


class TFAutoModel(object):
    r"""
    This is a generic model class that will be instantiated as one of the base model classes of the library
    when created with the when created with the :meth:`~transformers.TFAutoModel.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModel.from_config` class methods.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModel is designed to be instantiated "
            "using the `TFAutoModel.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModel.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the base model classes of the library from a configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use :meth:`~transformers.TFAutoModel.from_pretrained` to load
            the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModel
            >>> # Download configuration from S3 and cache.
            >>> config = TFAutoConfig.from_pretrained('bert-base-uncased')
            >>> model = TFAutoModel.from_config(config)
        """
        if type(config) in TF_MODEL_MAPPING.keys():
            return TF_MODEL_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_MAPPING.keys())
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the base model classes of the library from a pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""

        Examples::

            >>> from transformers import AutoConfig, AutoModel

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModel.from_pretrained('bert-base-uncased')

            >>> # Update configuration during loading
            >>> model = TFAutoModel.from_pretrained('bert-base-uncased', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/bert_pt_model_config.json')
            >>> model = TFAutoModel.from_pretrained('./pt_model/bert_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_MAPPING.keys():
            return TF_MODEL_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_MAPPING.keys())
            )
        )


class TFAutoModelForPreTraining(object):
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with the
    architecture used for pretraining this model---when created with the when created with the
    :meth:`~transformers.TFAutoModelForPreTraining.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelForPreTraining.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelForPreTraining is designed to be instantiated "
            "using the `TFAutoModelForPreTraining.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelForPreTraining.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_PRETRAINING_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with the architecture used for pretraining this
        model---from a configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use
            :meth:`~transformers.TFAutoModelForPreTraining.from_pretrained` to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForPreTraining
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('bert-base-uncased')
            >>> model = TFAutoModelForPreTraining.from_config(config)
        """
        if type(config) in TF_MODEL_FOR_PRETRAINING_MAPPING.keys():
            return TF_MODEL_FOR_PRETRAINING_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_FOR_PRETRAINING_MAPPING.keys())
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_PRETRAINING_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with the architecture used for pretraining this ",
        "model---from a pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForPreTraining

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelForPreTraining.from_pretrained('bert-base-uncased')

            >>> # Update configuration during loading
            >>> model = TFAutoModelForPreTraining.from_pretrained('bert-base-uncased', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/bert_pt_model_config.json')
            >>> model = TFAutoModelForPreTraining.from_pretrained('./pt_model/bert_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_FOR_PRETRAINING_MAPPING.keys():
            return TF_MODEL_FOR_PRETRAINING_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_FOR_PRETRAINING_MAPPING.keys())
            )
        )


class TFAutoModelWithLMHead(object):
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with a
    language modeling head---when created with the when created with the
    :meth:`~transformers.TFAutoModelWithLMHead.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelWithLMHead.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).

    .. warning::

        This class is deprecated and will be removed in a future version. Please use
        :class:`~transformers.TFAutoModelForCausalLM` for causal language models,
        :class:`~transformers.TFAutoModelForMaskedLM` for masked language models and
        :class:`~transformers.TFAutoModelForSeq2SeqLM` for encoder-decoder models.
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelWithLMHead is designed to be instantiated "
            "using the `TFAutoModelWithLMHead.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelWithLMHead.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_WITH_LM_HEAD_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with a language modeling head---from a configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use :meth:`~transformers.TFAutoModelWithLMHead.from_pretrained`
            to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelWithLMHead
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('bert-base-uncased')
            >>> model = TFAutoModelWithLMHead.from_config(config)
        """
        warnings.warn(
            "The class `TFAutoModelWithLMHead` is deprecated and will be removed in a future version. Please use "
            "`TFAutoModelForCausalLM` for causal language models, `TFAutoModelForMaskedLM` for masked language models "
            "and `TFAutoModelForSeq2SeqLM` for encoder-decoder models.",
            FutureWarning,
        )
        if type(config) in TF_MODEL_WITH_LM_HEAD_MAPPING.keys():
            return TF_MODEL_WITH_LM_HEAD_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_WITH_LM_HEAD_MAPPING.keys())
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_WITH_LM_HEAD_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with a language modeling head---from a pretrained ",
        "model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelWithLMHead

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelWithLMHead.from_pretrained('bert-base-uncased')

            >>> # Update configuration during loading
            >>> model = TFAutoModelWithLMHead.from_pretrained('bert-base-uncased', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/bert_pt_model_config.json')
            >>> model = TFAutoModelWithLMHead.from_pretrained('./pt_model/bert_pytorch_model.bin', from_pt=True, config=config)
        """
        warnings.warn(
            "The class `TFAutoModelWithLMHead` is deprecated and will be removed in a future version. Please use "
            "`TFAutoModelForCausalLM` for causal language models, `TFAutoModelForMaskedLM` for masked language models "
            "and `TFAutoModelForSeq2SeqLM` for encoder-decoder models.",
            FutureWarning,
        )
        config = kwargs.pop("config", None)

        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_WITH_LM_HEAD_MAPPING.keys():
            return TF_MODEL_WITH_LM_HEAD_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_WITH_LM_HEAD_MAPPING.keys())
            )
        )


class TFAutoModelForCausalLM:
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with a
    causal language modeling head---when created with the when created with the
    :meth:`~transformers.TFAutoModelForCausalLM.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelForCausalLM.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelForCausalLM is designed to be instantiated "
            "using the `TFAutoModelForCausalLM.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelForCausalLM.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_CAUSAL_LM_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with a causal language modeling head---from a
        configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use :meth:`~transformers.TFAutoModelForCausalLM.from_pretrained`
            to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForCausalLM
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('gpt2')
            >>> model = TFAutoModelForCausalLM.from_config(config)
        """
        if type(config) in TF_MODEL_FOR_CAUSAL_LM_MAPPING.keys():
            return TF_MODEL_FOR_CAUSAL_LM_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_FOR_CAUSAL_LM_MAPPING.keys())
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_CAUSAL_LM_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with a causal language modeling head---from a "
        "pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForCausalLM

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelForCausalLM.from_pretrained('gpt2')

            >>> # Update configuration during loading
            >>> model = TFAutoModelForCausalLM.from_pretrained('gpt2', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/gpt2_pt_model_config.json')
            >>> model = TFAutoModelForCausalLM.from_pretrained('./pt_model/gpt2_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_FOR_CAUSAL_LM_MAPPING.keys():
            return TF_MODEL_FOR_CAUSAL_LM_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_FOR_CAUSAL_LM_MAPPING.keys())
            )
        )


class TFAutoModelForMaskedLM:
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with a
    masked language modeling head---when created with the when created with the
    :meth:`~transformers.TFAutoModelForMaskedLM.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelForMasedLM.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelForMaskedLM is designed to be instantiated "
            "using the `TFAutoModelForMaskedLM.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelForMaskedLM.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_MASKED_LM_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with a masked language modeling head---from a
        configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use :meth:`~transformers.TFAutoModelForMaskedLM.from_pretrained`
            to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForMaskedLM
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('bert-base-uncased')
            >>> model = TFAutoModelForMaskedLM.from_config(config)
        """
        if type(config) in TF_MODEL_FOR_MASKED_LM_MAPPING.keys():
            return TF_MODEL_FOR_MASKED_LM_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_FOR_MASKED_LM_MAPPING.keys())
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_MASKED_LM_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with a masked language modeling head---from a "
        "pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForMaskedLM

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelForMaskedLM.from_pretrained('bert-base-uncased')

            >>> # Update configuration during loading
            >>> model = TFAutoModelForMaskedLM.from_pretrained('bert-base-uncased', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/bert_pt_model_config.json')
            >>> model = TFAutoModelForMaskedLM.from_pretrained('./pt_model/bert_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_FOR_MASKED_LM_MAPPING.keys():
            return TF_MODEL_FOR_MASKED_LM_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__, cls.__name__, ", ".join(c.__name__ for c in TF_MODEL_FOR_MASKED_LM_MAPPING.keys())
            )
        )


class TFAutoModelForSeq2SeqLM:
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with a
    sequence-to-sequence language modeling head---when created with the when created with the
    :meth:`~transformers.TFAutoModelForSeq2SeqLM.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelForSeq2SeqLM.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelForSeq2SeqLM is designed to be instantiated "
            "using the `TFAutoModelForSeq2SeqLM.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelForSeq2SeqLM.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with a sequence-to-sequence language modeling
        head---from a configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use
            :meth:`~transformers.TFAutoModelForSeq2SeqLM.from_pretrained` to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForSeq2SeqLM
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('t5')
            >>> model = TFAutoModelForSeq2SeqLM.from_config(config)
        """
        if type(config) in TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING.keys():
            return TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING.keys()),
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING, use_model_types=False)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with a sequence-to-sequence language modeling "
        "head---from a pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForSeq2SeqLM

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelForSeq2SeqLM.from_pretrained('t5-base')

            >>> # Update configuration during loading
            >>> model = TFAutoModelForSeq2SeqLM.from_pretrained('t5-base', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/t5_pt_model_config.json')
            >>> model = TFAutoModelForSeq2SeqLM.from_pretrained('./pt_model/t5_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING.keys():
            return TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_SEQ_TO_SEQ_CAUSAL_LM_MAPPING.keys()),
            )
        )


class TFAutoModelForSequenceClassification(object):
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with a
    sequence classification head---when created with the when created with the
    :meth:`~transformers.TFAutoModelForSequenceClassification.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelForSequenceClassification.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelForSequenceClassification is designed to be instantiated "
            "using the `TFAutoModelForSequenceClassification.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelForSequenceClassification.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with a sequence classification head---from a
        configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use
            :meth:`~transformers.TFAutoModelForSequenceClassification.from_pretrained` to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForSequenceClassification
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('bert-base-uncased')
            >>> model = TFAutoModelForSequenceClassification.from_config(config)
        """
        if type(config) in TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING.keys():
            return TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING.keys()),
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with a sequence classification head---from a "
        "pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForSequenceClassification

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelForSequenceClassification.from_pretrained('bert-base-uncased')

            >>> # Update configuration during loading
            >>> model = TFAutoModelForSequenceClassification.from_pretrained('bert-base-uncased', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/bert_pt_model_config.json')
            >>> model = TFAutoModelForSequenceClassification.from_pretrained('./pt_model/bert_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING.keys():
            return TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_SEQUENCE_CLASSIFICATION_MAPPING.keys()),
            )
        )


class TFAutoModelForQuestionAnswering(object):
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with a
    question answering head---when created with the when created with the
    :meth:`~transformers.TFAutoModeForQuestionAnswering.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelForQuestionAnswering.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelForQuestionAnswering is designed to be instantiated "
            "using the `TFAutoModelForQuestionAnswering.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelForQuestionAnswering.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with a question answering head---from a configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use
            :meth:`~transformers.TFAutoModelForQuestionAnswering.from_pretrained` to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForQuestionAnswering
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('bert-base-uncased')
            >>> model = TFAutoModelForQuestionAnswering.from_config(config)
        """
        if type(config) in TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING.keys():
            return TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING.keys()),
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with a question answering head---from a "
        "pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForQuestionAnswering

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelForQuestionAnswering.from_pretrained('bert-base-uncased')

            >>> # Update configuration during loading
            >>> model = TFAutoModelForQuestionAnswering.from_pretrained('bert-base-uncased', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/bert_pt_model_config.json')
            >>> model = TFAutoModelForQuestionAnswering.from_pretrained('./pt_model/bert_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING.keys():
            return TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_QUESTION_ANSWERING_MAPPING.keys()),
            )
        )


class TFAutoModelForTokenClassification:
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with a
    token classification head---when created with the when created with the
    :meth:`~transformers.TFAutoModelForTokenClassification.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelForTokenClassification.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelForTokenClassification is designed to be instantiated "
            "using the `TFAutoModelForTokenClassification.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelForTokenClassification.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with a token classification head---from a configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use
            :meth:`~transformers.TFAutoModelForTokenClassification.from_pretrained` to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForTokenClassification
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('bert-base-uncased')
            >>> model = TFAutoModelForTokenClassification.from_config(config)
        """
        if type(config) in TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING.keys():
            return TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING.keys()),
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with a token classification head---from a "
        "pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForTokenClassification

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelForTokenClassification.from_pretrained('bert-base-uncased')

            >>> # Update configuration during loading
            >>> model = TFAutoModelForTokenClassification.from_pretrained('bert-base-uncased', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/bert_pt_model_config.json')
            >>> model = TFAutoModelForTokenClassification.from_pretrained('./pt_model/bert_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING.keys():
            return TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_TOKEN_CLASSIFICATION_MAPPING.keys()),
            )
        )


class TFAutoModelForMultipleChoice:
    r"""
    This is a generic model class that will be instantiated as one of the model classes of the library---with a
    multiple choice classifcation head---when created with the when created with the
    :meth:`~transformers.TFAutoModelForMultipleChoice.from_pretrained` class method or the
    :meth:`~transformers.TFAutoModelForMultipleChoice.from_config` class method.

    This class cannot be instantiated directly using ``__init__()`` (throws an error).
    """

    def __init__(self):
        raise EnvironmentError(
            "TFAutoModelForMultipleChoice is designed to be instantiated "
            "using the `TFAutoModelForMultipleChoice.from_pretrained(pretrained_model_name_or_path)` or "
            "`TFAutoModelForMultipleChoice.from_config(config)` methods."
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING, use_model_types=False)
    def from_config(cls, config):
        r"""
        Instantiates one of the model classes of the library---with a multiple choice classification head---from a
        configuration.

        Note:
            Loading a model from its configuration file does **not** load the model weights.
            It only affects the model's configuration. Use
            :meth:`~transformers.TFAutoModelForMultipleChoice.from_pretrained` to load the model weights.

        Args:
            config (:class:`~transformers.PretrainedConfig`):
                The model class to instantiate is selected based on the configuration class:

                List options

        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForMultipleChoice
            >>> # Download configuration from S3 and cache.
            >>> config = AutoConfig.from_pretrained('bert-base-uncased')
            >>> model = TFAutoModelForMultipleChoice.from_config(config)
        """
        if type(config) in TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING.keys():
            return TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING[type(config)](config)
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING.keys()),
            )
        )

    @classmethod
    @replace_list_option_in_docstrings(TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING)
    @add_start_docstrings(
        "Instantiate one of the model classes of the library---with a multiple choice classification head---from a "
        "pretrained model.",
        TF_AUTO_MODEL_PRETRAINED_DOCSTRING,
    )
    def from_pretrained(cls, pretrained_model_name_or_path, *model_args, **kwargs):
        r"""
        Examples::

            >>> from transformers import AutoConfig, TFAutoModelForMultipleChoice

            >>> # Download model and configuration from S3 and cache.
            >>> model = TFAutoModelForMultipleChoice.from_pretrained('bert-base-uncased')

            >>> # Update configuration during loading
            >>> model = TFAutoModelForMultipleChoice.from_pretrained('bert-base-uncased', output_attentions=True)
            >>> model.config.output_attentions
            True

            >>> # Loading from a PyTorch checkpoint file instead of a TensorFlow model (slower)
            >>> config = AutoConfig.from_json_file('./pt_model/bert_pt_model_config.json')
            >>> model = TFAutoModelForMultipleChoice.from_pretrained('./pt_model/bert_pytorch_model.bin', from_pt=True, config=config)
        """
        config = kwargs.pop("config", None)
        if not isinstance(config, PretrainedConfig):
            config, kwargs = AutoConfig.from_pretrained(
                pretrained_model_name_or_path, return_unused_kwargs=True, **kwargs
            )

        if type(config) in TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING.keys():
            return TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING[type(config)].from_pretrained(
                pretrained_model_name_or_path, *model_args, config=config, **kwargs
            )
        raise ValueError(
            "Unrecognized configuration class {} for this kind of TFAutoModel: {}.\n"
            "Model type should be one of {}.".format(
                config.__class__,
                cls.__name__,
                ", ".join(c.__name__ for c in TF_MODEL_FOR_MULTIPLE_CHOICE_MAPPING.keys()),
            )
        )
