code: def test_record_writer_s3(self):
      client = boto3.client("s3", region_name="us-east-1")
      client.create_bucket(Bucket="this")
      writer = S3RecordWriter("s3://this/is/apen")
      bucket, path = writer.bucket_and_path()
      assert bucket == "this"
      assert path == "is/apen"
      writer.write(bytes(42))
      writer.flush()
      shutil.rmtree("s3:")
  
file_path: tensorboardX/tests/test_record_writer.py
imports: from tensorboardX import SummaryWriter
  import unittest
  from tensorboardX.record_writer import S3RecordWriter, make_valid_tf_name, GCSRecordWriter
  import os
  import boto3
  import shutil
  from moto import mock_s3
label_desc: Use image node_id 1 for calling the RecordWriterTest obj's underlying member method code with example usage: obj.test_record_writer_s3() without return types