'Delete multiple objects or containers from their account.
For More information please check:
https://docs.openstack.org/swift/latest/middleware.html#module-swift.common.middleware.bulk'

def delete_bulk_data(self, data=None, headers=None):

    url = '?bulk-delete'
    if (headers is None):
        headers = {}
    (resp, body) = self.delete(url, headers, data)
    self.expected_success(200, resp.status)
    return rest_client.ResponseBodyData(resp, body)
