src/transformers/models/blenderbot/tokenization_blenderbot_fast.py/BlenderbotTokenizerFast/build_inputs_with_special_tokens
class BlenderbotTokenizerFast:    def build_inputs_with_special_tokens(self, token_ids_0: List[int], token_ids_1: Optional[List[int]] = None):
        """
        Build model inputs from a sequence or a pair of sequence for sequence classification tasks by concatenating and
        adding special tokens. A Blenderbot sequence has the following format:
        - single sequence: ` X </s>`

        Args:
            token_ids_0 (`List[int]`):
                List of IDs to which the special tokens will be added
            token_ids_1 (`List[int]`, *optional*):
                Will be ignored
        Returns:
            `List[int]`: list of [input IDs](../glossary#input-ids) with the appropriate special tokens.
        """
        return token_ids_0 + [self.eos_token_id]