class_docstr: Dummy channel for testing.
class_docstr_tok: ["Dummy","channel","for","testing","."]
code: def __init__(
      self,
      artifact_type: Type[artifact.Artifact],
      artifact_ids: Sequence[int] = (),
  ):
      super().__init__(artifact_type)
      self.artifact_ids = artifact_ids
  
imports: import typing
  from typing import Callable, Dict, Iterable, Iterator, List, Optional, Sequence, Set, Type, cast
  from tfx.dsl.placeholder import placeholder
  from tfx.proto.orchestration import placeholder_pb2
  from tfx.types import artifact
  from tfx.types import channel
label_desc: Use image node_id 1 to create a new ChannelForTesting object from inherited base classes: channel with example: obj = ChannelForTesting(artifact_type, artifact_ids)