code: def downgrade_metadata_v3_to_v2():
      return [_downgrade_metadata_v3_to_v2()]
  
file_path: PySyft/packages/syft/src/syft/service/metadata/migrations.py
imports: from typing import Callable
  from ...types.syft_migration import migrate
  from ...types.transforms import TransformContext
  from ...types.transforms import drop
  from ...types.transforms import rename
  from .node_metadata import NodeMetadata
  from .node_metadata import NodeMetadataV2
  from .node_metadata import NodeMetadataV3
label_desc: Use image node_id 5 for calling a global function with example usage: downgrade_metadata_v3_to_v2() and returns: list