src/transformers/pipelines/feature_extraction.py/FeatureExtractionPipeline/preprocess
class FeatureExtractionPipeline:    def preprocess(self, inputs, **tokenize_kwargs) -> Dict[str, GenericTensor]:
        return_tensors = self.framework
        model_inputs = self.tokenizer(inputs, return_tensors=return_tensors, **tokenize_kwargs)
        return model_inputs