code: def testArtifactCollectionAsChannel(self):
      instance_a = _MyArtifact()
      instance_b = _MyArtifact()
      chnl = channel_utils.as_channel([instance_a, instance_b])
      self.assertEqual(chnl.type, _MyArtifact)
      self.assertEqual(chnl.type_name, "MyTypeName")
      self.assertCountEqual(chnl.get(), [instance_a, instance_b])
  
file_path: tfx/tfx/types/channel_utils_test.py
imports: import tensorflow
  from tfx.dsl.placeholder import placeholder
  from tfx.types import artifact
  from tfx.types import channel
  from tfx.types import channel_utils
  from tfx.types import standard_artifacts
label_desc: Use image node_id 1 for calling the ChannelUtilsTest obj's underlying member method code with example usage: obj.testArtifactCollectionAsChannel() without return types