code: def repository(self, owner, repository):
          
          json = None
          if owner and repository:
              url = self._build_url('repos', owner, repository)
              json = self._json(self._get(url), 200)
          return Repository(json, self) if json else None
docs: Returns a Repository object for the specified combination of
          owner and repository
  
          :param str owner: (required)
          :param str repository: (required)
          :returns: :class:`Repository <github3.repos.Repository>`