code: def test_update_for_presented(self):
      new_datetime = datetime.datetime.now().strftime("%Y%m%d_%H%M%S%f")
  
      self.sut.update(
          Path(f"{self.tempDir.name}/test.file"),
          "new_test_hash",
          new_datetime,
      )
      returned = self.sut.fetch_one(
          Path(f"{self.tempDir.name}/test.file")
      )
  
      self.assertEqual(returned.file_hash, "new_test_hash")
      self.assertEqual(returned.modification_date, new_datetime)
  
file_path: neptune-client/tests/unit/neptune/new/internal/artifacts/test_local_file_hash_storage.py
imports: import datetime
  import tempfile
  import unittest
  from pathlib import Path
  from mock import patch
  from neptune.internal.artifacts.local_file_hash_storage import LocalFileHashStorage
label_desc: Use image node_id 5 for calling the TestLocalFileHashStorage obj's underlying member method code with example usage: obj.test_update_for_presented() without return types