code: def test_get_set_max_concurrent_checkpoints(self):
      self.assertEqual(
          self.checkpoint_config.get_max_concurrent_checkpoints(), 1
      )
  
      self.checkpoint_config.set_max_concurrent_checkpoints(2)
  
      self.assertEqual(
          self.checkpoint_config.get_max_concurrent_checkpoints(), 2
      )
  
file_path: flink/flink-python/pyflink/datastream/tests/test_check_point_config.py
imports: from pyflink.common import Duration
  from pyflink.datastream import CheckpointConfig, CheckpointingMode, ExternalizedCheckpointCleanup, StreamExecutionEnvironment
  from pyflink.java_gateway import get_gateway
  from pyflink.testing.test_case_utils import PyFlinkTestCase
label_desc: Use image node_id 8 for calling the CheckpointConfigTests obj's underlying member method code with example usage: obj.test_get_set_max_concurrent_checkpoints() without return types