code: def get_regions(self):
          
          response = self._send(http_method='GET',
                                location_id='b129ca90-999d-47bb-ab37-0dcf784ee633',
                                version='5.1-preview.1')
          return self._deserialize('ProfileRegions', response)
docs: GetRegions.
          [Preview API]
          :rtype: :class:`<ProfileRegions> <azure.devops.v5_1.profile-regions.models.ProfileRegions>`