docs: def default_repository(self):
          """Return dictionary with default repo name and url
          """
          default_dict_repo = {}
          for line in self.default_repositories_list.splitlines():
              line = line.lstrip()
              if not line.startswith("#"):
                  if line.split()[0] in self.DEFAULT_REPOS_NAMES:
                      default_dict_repo[line.split()[0]] = line.split()[1]
                  else:
                      print("\nslpkg: Error: Repository name '{0}' is not "
                            "default.\n              Please check file: "
                            "/etc/slpkg/default-repositories\n".format(
                                line.split()[0]))
                      raise SystemExit()
          return default_dict_repo