code: def get_reader(
      self, ctx, uri: "URI", metadata: "Metadata", type_name: str
  ) -> ModelUnresolvedReader:
      return ModelUnresolvedReader(
          ctx,
          _ArtifactType(
              uri=uri, metadata=metadata, type_name=type_name
          ),
      )
  
file_path: FATE/python/fate/components/core/component_desc/artifacts/model/_unresolved.py
imports: from fate.components.core.essential import ModelUnresolvedArtifactType
  from .._base_type import URI, ArtifactDescribe, ModelOutputMetadata, Metadata, _ArtifactType, _ArtifactTypeReader, _ArtifactTypeWriter
label_desc: Use image node_id 3 for calling the ModelUnresolvedArtifactDescribe obj's underlying member method code with example usage: obj.get_reader(ctx, uri, metadata, type_name) and returns: ModelUnresolvedReader