class_docstr: A Base class for a worker manager. 
docstr: Returns the latest results. 
docstr_tok: ["Returns","the","latest","results","."]
code: def fetch_latest_results(self):
      """Returns the latest results."""
      ret_idxs = []
      for i in range(len(self.latest_results)):
          if (
              self.latest_results[i].receive_time
              <= self.experiment_designer.get_curr_spent_capital()
              + _TIME_TOL
          ):
              ret_idxs.append(i)
      keep_idxs = [
          i
          for i in range(len(self.latest_results))
          if i not in ret_idxs
      ]
      ret = [self.latest_results[i] for i in ret_idxs]
      self.latest_results = [self.latest_results[i] for i in keep_idxs]
      return ret
  
imports: from __future__ import print_function
  from __future__ import division
  from argparse import Namespace
  from multiprocessing import Process
  import numpy
  import os
  import pickle
  import shutil
  import time
  from .exd_utils import EVAL_ERROR_CODE
label_desc: Use image node_id 4 for calling the AbstractWorkerManager obj's underlying member method code with example usage: obj.fetch_latest_results() and returns: ret