code: def _init_ray(self):
      if not ray.is_initialized():
          ray.init(address="auto")
  
file_path: ray/release/xgboost_tests/workloads/distributed_api_test.py
imports: import ray
  from xgboost_ray.tests.test_xgboost_api import XGBoostAPITest
  from xgboost_ray.tests.test_data_source import ModinDataSourceTest
label_desc: Use image node_id 1 for calling the XGBoostDistributedModinDataSourceTest obj's underlying member method code with example usage: obj._init_ray() without return types