code: def testAsChannelDeprecated(self):
      channel.as_channel([standard_artifacts.Model()])
      self._assertDeprecatedWarningRegex(
          "tfx.utils.channel.as_channel has been renamed to "
          "tfx.types.channel_utils.as_channel"
      )
  
file_path: tfx/tfx/utils/channel_test.py
imports: from unittest import mock
  import tensorflow
  from tfx.types import standard_artifacts
  from tfx.utils import channel
  from tfx.utils import deprecation_utils
  from tfx.utils import test_case_utils
label_desc: Use image node_id 4 for calling the ChannelTest obj's underlying member method code with example usage: obj.testAsChannelDeprecated() without return types