def _save_representative_docs(self, documents: pd.DataFrame):
        """Save the 3 most representative docs per topic.

        Arguments:
            documents: Dataframe with documents and their corresponding IDs

        Updates:
            self.representative_docs_: Populate each topic with 3 representative docs
        """
        repr_docs, _, _, _ = self._extract_representative_docs(
            self.c_tf_idf_,
            documents,
            self.topic_representations_,
            nr_samples=500,
            nr_repr_docs=3,
        )
        self.representative_docs_ = repr_docs
Save the 3 most representative docs per topic.

        Arguments:
            documents: Dataframe with documents and their corresponding IDs

        Updates:
            self.representative_docs_: Populate each topic with 3 representative docs
        
bertopic/_bertopic.py