code: def get_ray_context():
      from bigdl.orca.ray import OrcaRayContext
  
      return OrcaRayContext.get()
  
imports: import os
  from bigdl.dllib.nncontext import ZooContext
  from bigdl.dllib.utils.log4Error import *
  import pickle
  import hmac
  import hashlib
label_desc: Use image node_id 4 for calling the OrcaContext obj's underlying member method code with example usage: obj.get_ray_context() and returns: OrcaRayContext