code: def read_identity_batch(self, batch_info):
          
          content = self._serialize.body(batch_info, 'IdentityBatchInfo')
          response = self._send(http_method='POST',
                                location_id='299e50df-fe45-4d3a-8b5b-a5836fac74dc',
                                version='5.0-preview.1',
                                content=content)
          return self._deserialize('[Identity]', self._unwrap_collection(response))
docs: ReadIdentityBatch.
          [Preview API]
          :param :class:`<IdentityBatchInfo> <azure.devops.v5_0.identity.models.IdentityBatchInfo>` batch_info:
          :rtype: [Identity]