ReadIdentityBatch.
        [Preview API]
        :param :class:`<IdentityBatchInfo> <azure.devops.v5_0.identity.models.IdentityBatchInfo>` batch_info:
        :rtype: [Identity]

def read_identity_batch(self, batch_info):
        """ReadIdentityBatch.
        [Preview API]
        :param :class:`<IdentityBatchInfo> <azure.devops.v5_0.identity.models.IdentityBatchInfo>` batch_info:
        :rtype: [Identity]
        """
        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))