src/transformers/models/pegasus_x/modeling_pegasus_x.py/PegasusXModel/get_position_embeddings
class PegasusXModel:    def get_position_embeddings(self) -> Tuple[nn.Embedding]:
        """
        Returns the position embeddings matrix
        """
        return (self.encoder.get_position_embeddings(), self.decoder.get_position_embeddings())