src/transformers/models/perceiver/modeling_perceiver.py/PerceiverOpticalFlowDecoder/decoder_query
class PerceiverOpticalFlowDecoder:    def decoder_query(self, inputs, modality_sizes=None, inputs_without_pos=None, subsampled_points=None):
        if subsampled_points is not None:
            raise ValueError("FlowDecoder doesn't support subsampling yet.")
        return inputs