code: def __call__(self, rng, space, params):
      if self.no_call:
          raise RuntimeError("Should not have been called!")
  
      if self.rval is not None:
          return self.rval
  
      return params
  
imports: from orion.algo.pbt.exploit import BaseExploit
  from orion.algo.pbt.explore import BaseExplore
  from orion.algo.pbt.pbt import LineageNode, Lineages
  from orion.core.utils.pptree import print_tree
  from orion.core.worker.trial import Trial
label_desc: Use image node_id 2 for calling the ExploreStub obj's underlying member method code with example usage: obj.__call__(rng, space, params) and returns: params, self