code: def test_jumpstart_cache_handles_boto3_issues(mock_boto3_client):
      mock_boto3_client.return_value.get_object.side_effect = (
          Exception()
      )
  
      cache = JumpStartModelsCache(s3_bucket_name="some_bucket")
  
      with pytest.raises(Exception):
          cache.get_header(
              model_id="tensorflow-ic-imagenet-inception-v3-classification-4",
          )
  
      mock_boto3_client.return_value.reset_mock()
  
      mock_boto3_client.return_value.head_object.side_effect = (
          Exception()
      )
  
      cache = JumpStartModelsCache(s3_bucket_name="some_bucket")
  
      with pytest.raises(Exception):
          cache.get_header(
              model_id="tensorflow-ic-imagenet-inception-v3-classification-4",
          )
  
imports: from __future__ import absolute_import
  import copy
  import datetime
  import io
  import json
  from unittest.mock import Mock, call, mock_open
  from botocore.stub import Stubber
  import botocore
  from mock.mock import MagicMock
  import pytest
  from mock import patch
  from sagemaker.jumpstart.cache import JUMPSTART_DEFAULT_MANIFEST_FILE_S3_KEY, JumpStartModelsCache
  from sagemaker.jumpstart.constants import ENV_VARIABLE_JUMPSTART_MANIFEST_LOCAL_ROOT_DIR_OVERRIDE, ENV_VARIABLE_JUMPSTART_SPECS_LOCAL_ROOT_DIR_OVERRIDE
  from sagemaker.jumpstart.types import JumpStartModelHeader, JumpStartModelSpecs, JumpStartVersionedModelId
  from tests.unit.sagemaker.jumpstart.utils import get_spec_from_base_spec, patched_retrieval_function
  from tests.unit.sagemaker.jumpstart.constants import BASE_MANIFEST, BASE_SPEC
  from sagemaker.jumpstart.utils import get_jumpstart_content_bucket
label_desc: Use image node_id 2 for calling a global function with example usage: test_jumpstart_cache_handles_boto3_issues(mock_boto3_client) without return types