code: def volume_kms_key(sagemaker_session):
      role_arn = sagemaker_session.expand_role(ROLE)
      return get_or_create_kms_key(
          sagemaker_session=sagemaker_session,
          role_arn=role_arn,
          alias="integ-test-processing-volume-kms-key-{}".format(
              sagemaker_session.boto_session.region_name
          ),
      )
  
imports: from __future__ import absolute_import
  import os
  import pytest
  from botocore.config import Config
  from sagemaker import image_uris, Session
  from sagemaker.dataset_definition.inputs import DatasetDefinition, RedshiftDatasetDefinition, AthenaDatasetDefinition, S3Input
  from sagemaker.network import NetworkConfig
  from sagemaker.processing import ProcessingInput, ProcessingOutput, ScriptProcessor, Processor, ProcessingJob, FeatureStoreOutput
  from sagemaker.sklearn.processing import SKLearnProcessor
  from tests.integ import DATA_DIR
  from tests.integ.kms_utils import get_or_create_kms_key
label_desc: Use image node_id 3 for calling a global function with example usage: volume_kms_key(sagemaker_session) and returns: get_or_create_kms_key