code: def testCall_WithNoOutputType_ArtifactList(self):
      @resolver_function.resolver_function
      def resolve(*args, **kwargs):
          del args, kwargs
          return DummyNode(resolver_op.DataType.ARTIFACT_LIST)
  
      output = resolve(DummyChannel(X))
      self.assertTrue(
          typing_utils.is_compatible(output, tfx.types.BaseChannel)
      )
      self.assertEqual(output.type, X)
  
imports: from typing import Mapping, Set
  import tensorflow
  from tfx.dsl.control_flow import for_each
  from tfx.dsl.control_flow import for_each_internal
  from tfx.dsl.input_resolution import resolver_function
  from tfx.dsl.input_resolution import resolver_op
  import tfx.types
  from tfx.types import resolved_channel
  from tfx.utils import typing_utils
label_desc: Use image node_id 6 for calling the ResolverFunctionTest obj's underlying member method code with example usage: obj.testCall_WithNoOutputType_ArtifactList() and returns: DummyNode