docs: def unprotect_branches(self):
          "Unprotect branches of the GitLab project"
          g = self.gitlab
          url = g['url'] + "/projects/" + g['repo'] + "/repository/branches"
          query = {'private_token': g['token']}
          unprotected = 0
          r = requests.get(url, params=query)
          r.raise_for_status()
          for branch in r.json():
              if branch['protected']:
                  r = requests.put(url + "/" + branch['name'] +
                                   "/unprotect", params=query)
                  r.raise_for_status()
                  unprotected += 1
          return unprotected