code: def to_manifest_json(self) -> Dict:
      raise NotImplementedError
  
file_path: wandb/wandb/sdk/artifacts/artifact_manifest.py
imports: from typing import TYPE_CHECKING, Dict, List, Mapping, Optional
  from wandb.sdk.lib.hashutil import HexMD5
label_desc: Use image node_id 5 for calling the ArtifactManifest obj's underlying member method code with example usage: obj.to_manifest_json() without return types