Return the repodata paths based on `channels` and the `data_directory`.

        There is no check for validity here.

def repodata_files(self, channels=None):
        """
        Return the repodata paths based on `channels` and the `data_directory`.

        There is no check for validity here.
        """
        if channels is None:
            channels = self.conda_get_condarc_channels()

        repodata_urls = self._set_repo_urls_from_channels(channels)

        repopaths = []

        for repourl in repodata_urls:
            fullpath = os.sep.join([self._repo_url_to_path(repourl)])
            repopaths.append(fullpath)

        return repopaths