code: def fake_read(self):
      """Mock read method for ValueArtifact."""
      if not self._has_value:  # pylint: disable=protected-access
          self._has_value = True  # pylint: disable=protected-access
          self._value = self.decode(
              _BYTE_VALUE
          )  # pylint: disable=protected-access
      return self._value
  
imports: import os
  from unittest import mock
  import tensorflow
  from tfx import types
  from tfx.dsl.components.base import base_driver
  from tfx.dsl.io import fileio
  from tfx.orchestration import data_types
  from tfx.types import channel
  from tfx.types import channel_utils
  from tfx.types import standard_artifacts
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 1 for calling a global function with example usage: fake_read() and returns: self