code: def test_multiple_retrieval_prefix(self):
      files = S3ArtifactDriver.get_tracked_files(
          f"s3://{self.bucket_name}/path/", "my/custom_path"
      )
      files = sorted(files, key=lambda file: file.file_path)
  
      self.assertEqual(len(files), 4)
  
      self.assertEqual(
          "9033e0e305f247c0c3c80d0c7848c8b3", files[0].file_hash
      )
      self.assertEqual("my/custom_path/file3", files[0].file_path)
      self.assertEqual(
          f"s3://{self.bucket_name}/path/file3",
          files[0].metadata["location"],
      )
  
      self.assertEqual(
          "d41d8cd98f00b204e9800998ecf8427e", files[1].file_hash
      )
      self.assertEqual("my/custom_path/to", files[1].file_path)
      self.assertEqual(0, files[1].size)
      self.assertEqual(
          f"s3://{self.bucket_name}/path/to/",
          files[1].metadata["location"],
      )
  
      self.assertEqual(
          "2f249230a8e7c2bf6005ccd2679259ec", files[2].file_hash
      )
      self.assertEqual("my/custom_path/to/file1", files[2].file_path)
      self.assertEqual(
          f"s3://{self.bucket_name}/path/to/file1",
          files[2].metadata["location"],
      )
  
      self.assertEqual(
          "7215ee9c7d9dc229d2921a40e899ec5f", files[3].file_hash
      )
      self.assertEqual("my/custom_path/to/file2", files[3].file_path)
      self.assertEqual(
          f"s3://{self.bucket_name}/path/to/file2",
          files[3].metadata["location"],
      )
  
imports: import datetime
  import tempfile
  import unittest
  from pathlib import Path
  import boto3
  import freezegun
  from moto import mock_s3
  from neptune.exceptions import NeptuneUnsupportedArtifactFunctionalityException
  from neptune.internal.artifacts.drivers.s3 import S3ArtifactDriver
  from neptune.internal.artifacts.types import ArtifactDriversMap, ArtifactFileData, ArtifactFileType
  from tests.unit.neptune.new.internal.artifacts.utils import md5
label_desc: Use image node_id 7 for calling the TestS3ArtifactDrivers obj's underlying member method code with example usage: obj.test_multiple_retrieval_prefix() without return types