code: def testBuildClusterEnvSelectLastBuild(self):
      self.cluster_manager.set_cluster_env()
      self.cluster_manager.cluster_env_id = "correct"
      # (Second) build succeeded
      self.cluster_manager.cluster_env_build_id = None
      self.sdk.reset()
      self.sdk.returns["list_cluster_environment_builds"] = APIDict(
          results=[
              APIDict(
                  id="build_succeeded",
                  status="succeeded",
                  created_at=0,
                  error_message=None,
                  config_json={},
              ),
              APIDict(
                  id="build_succeeded_2",
                  status="succeeded",
                  created_at=1,
                  error_message=None,
                  config_json={},
              ),
          ]
      )
      self.cluster_manager.build_cluster_env(timeout=600)
      self.assertTrue(self.cluster_manager.cluster_env_build_id)
      self.assertEqual(
          self.cluster_manager.cluster_env_build_id, "build_succeeded_2"
      )
      self.assertEqual(
          self.sdk.call_counter["list_cluster_environment_builds"], 1
      )
      self.assertEqual(len(self.sdk.call_counter), 1)
  
imports: import os
  import sys
  import time
  import unittest
  from typing import Callable
  from unittest.mock import patch
  from freezegun import freeze_time
  from ray_release.exception import ClusterCreationError, ClusterStartupError, ClusterStartupTimeout, ClusterStartupFailed, ClusterEnvBuildError, ClusterEnvBuildTimeout, ClusterComputeCreateError, ClusterEnvCreateError
  from ray_release.cluster_manager.full import FullClusterManager
  from ray_release.cluster_manager.minimal import MinimalClusterManager
  from ray_release.tests.utils import UNIT_TEST_PROJECT_ID, UNIT_TEST_CLOUD_ID, APIDict, fail_always, fail_once, MockSDK
  from ray_release.util import get_anyscale_sdk
  from ray_release.test import Test
label_desc: Use image node_id 16 for calling the MinimalSessionManagerTest obj's underlying member method code with example usage: obj.testBuildClusterEnvSelectLastBuild() without return types