code: def __getattr__(self, key):
      if key not in self.base and key not in self.outputs:
          self.inputs[key] = getattr(self.flow, key)
      return getattr(self.flow, key)
  
file_path: wandb/wandb/integration/metaflow/metaflow.py
imports: import inspect
  import pickle
  from functools import wraps
  from pathlib import Path
  import wandb
  from wandb.sdk.lib import telemetry
label_desc: Use image node_id 3 for calling the ArtifactProxy obj's underlying member method code with example usage: obj.__getattr__(key) and returns: getattr