code: def update_dimension(model, input_dimension):
      """
      Given a model that takes an array of dimension input_dimension, returns
      the output dimension.
      """
  
      # This doesn't expand anything.
      return input_dimension
  
file_path: coremltools/coremltools/converters/sklearn/_imputer.py
imports: from distutils.version import StrictVersion
  from ...None import SPECIFICATION_VERSION
  from ..._deps import _HAS_SKLEARN, _SKLEARN_VERSION
  from ...models import MLModel
  from ...models import datatypes
  from ...models._interface_management import set_transform_interface_params
  from ...proto import Model_pb2
  from .None import _sklearn_util
label_desc: Use image node_id 2 for calling a global function with example usage: update_dimension(model, input_dimension) and returns: input_dimension