code: def num_examples(
      logits: jnp.ndarray, weights: Optional[jnp.ndarray] = None
  ) -> Union[jnp.ndarray, int]:
      if weights is None:
          return logits.shape[0]
      return weights.sum()
  
file_path: scenic/scenic/projects/baselines/bert/bert_base_model.py
imports: from typing import Callable, Dict, Optional, Tuple, Union
  from flax.training import common_utils
  import jax
  import jax.numpy
  import numpy
  from scenic.model_lib.base_models import base_model
  from scenic.model_lib.base_models import model_utils
label_desc: Use image node_id 1 for calling a global function with example usage: num_examples(logits, weights) and returns: weights, logits