code: def get_file_contents(self, path, ref=github.GithubObject.NotSet):
          
          assert isinstance(path, (str, unicode)), path
          assert ref is github.GithubObject.NotSet or isinstance(ref, (str, unicode)), ref
          url_parameters = dict()
          if ref is not github.GithubObject.NotSet:
              url_parameters["ref"] = ref
          headers, data = self._requester.requestJsonAndCheck(
              "GET",
              self.url + "/contents/" + urllib.quote(path),
              parameters=url_parameters
          )
          if isinstance(data, list):
              return [
                  github.ContentFile.ContentFile(self._requester, headers, item, completed=False)
                  for item in data
              ]
          return github.ContentFile.ContentFile(self._requester, headers, data, completed=True)
docs: :calls: `GET /repos/:owner/:repo/contents/:path <http://developer.github.com/v3/repos/contents>`_
          :param path: string
          :param ref: string
          :rtype: :class:`github.ContentFile.ContentFile`