code: def __enter__(self):
      if self.use_sklearnex:
          from sklearnex import patch_sklearn
  
          patch_sklearn(self.algorithm_list)
      from sklearn.cluster import DBSCAN
  
      self.DBSCAN = DBSCAN
      return self.DBSCAN
  
file_path: BigDL/python/chronos/src/bigdl/chronos/detector/anomaly/util.py
imports: import numpy
  from logging import warning
label_desc: Use image node_id 2 for calling the INTEL_EXT_DBSCAN obj's underlying member method code with example usage: obj.__enter__() and returns: self