class_docstr: A single entry in an artifact manifest.
class_docstr_tok: ["A","single","entry","in","an","artifact","manifest","."]
code: def _referenced_artifact_id(self) -> Optional[str]:
      if not self._is_artifact_reference():
          return None
      return hex_to_b64_id(urlparse(self.ref).netloc)
  
file_path: wandb/wandb/sdk/artifacts/artifact_manifest_entry.py
imports: import json
  import os
  from pathlib import Path
  from typing import TYPE_CHECKING, Dict, Optional, Union
  from urllib.parse import urlparse
  from wandb.errors.term import termwarn
  from wandb.sdk.lib import filesystem
  from wandb.sdk.lib.hashutil import B64MD5, ETag, b64_to_hex_id, hex_to_b64_id, md5_file_b64
  from wandb.sdk.lib.paths import FilePathStr, LogicalPath, StrPath, URIStr
label_desc: Use image node_id 10 for calling the ArtifactManifestEntry obj's underlying member method code with example usage: obj._referenced_artifact_id() and returns: hex_to_b64_id, None