code: def get_model_cls(model_name: str) -> Any:
      """Returns model class given its name."""
      if model_name == "matvit_multilabel_classification":
          return matvit.MatViTMultiLabelClassificationModel
      else:
          raise ValueError(f"Unrecognized model: {model_name}.")
  
file_path: scenic/scenic/projects/matvit/main.py
imports: from typing import Any
  from absl import flags
  from clu import metric_writers
  import jax
  import jax.numpy
  import ml_collections
  from scenic import app
  from scenic.projects.matvit import matvit
  from scenic.projects.matvit import trainer
  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: matvit