def METHOD_NAME(self, container: neptune.Run, environment):
    number_of_reinitialized = 10
    namespace = self.gen_key()
    container[f"{namespace}/{fake.unique.word()}"] = fake.color()
    with concurrent.futures.ProcessPoolExecutor(max_workers=3) as executor:
        futures = [
            executor.submit(
                store_in_container,
                sys_id=container["sys/id"].fetch(),
                container_type=container.container_type.value,
                project=environment.project,
                destination=f"{namespace}/{fake.unique.word()}",
            )
            for _ in range(number_of_reinitialized)
        ]
        for future in concurrent.futures.as_completed(futures):
            _ = future.result()
    container.sync()
    assert len(container[namespace].fetch()) == number_of_reinitialized + 1