code: def _get_default_configs_for_testing() -> ml_collections.ConfigDict:
      return ml_collections.ConfigDict(
          dict(
              num_filters=16,
              num_layers=5,
              data_dtype_str="float32",
          )
      )
  
imports: import functools
  from typing import Tuple, Callable, Any, Optional, Union, Dict
  from absl import logging
  import flax
  import flax.linen
  from jax.nn import initializers
  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 1 for calling a global function with example usage: _get_default_configs_for_testing() and returns: ml_collections