code: def get_model_cls(model_name: str):
      """Get the model class for the PonderNet project."""
      if model_name == "pondervit":
          return pondervit.PonderViTMultiLabelClassificationModel
      else:
          raise ValueError(f"Unrecognized model: {model_name}.")
  
file_path: scenic/scenic/projects/baselines/pondernet/main.py
imports: from absl import flags
  from clu import metric_writers
  import jax
  import jax.numpy
  import ml_collections
  from scenic import app
  from scenic.projects.baselines.pondernet import pondernet_trainer
  from scenic.projects.baselines.pondernet.pondervit import pondervit
  from scenic.train_lib import train_utils
label_desc: Use image node_id 1 for calling a global function with example usage: get_model_cls(model_name) and returns: pondervit