code: def _get_default_configs_for_testing() -> ml_collections.ConfigDict:
      return ml_collections.ConfigDict(
          dict(
              width_factor=1,
              num_layers=5,
          )
      )
  
imports: from typing import Any, Dict, Optional, Sequence, Tuple, Union
  from absl import logging
  import flax
  import flax.linen
  import jax.numpy
  import ml_collections
  from scenic.common_lib import debug_utils
  from scenic.model_lib.base_models.classification_model import ClassificationModel
  from scenic.model_lib.base_models.multilabel_classification_model import MultiLabelClassificationModel
  from scenic.model_lib.layers import nn_layers
label_desc: Use image node_id 2 for calling a global function with example usage: _get_default_configs_for_testing() and returns: ml_collections