class_docstr: Orion mock client for Runner.
class_docstr_tok: ["Orion","mock","client","for","Runner","."]
docstr: Fake suggest.
docstr_tok: ["Fake","suggest","."]
code: def suggest(self, pool_size=None):
      """Fake suggest."""
      if self.trials:
          return self.trials.pop()
  
      raise self.suggest_error
  
file_path: orion/tests/unittests/client/runner_subprocess.py
imports: from argparse import ArgumentParser
  from orion.client.runner import Runner
  from orion.core.utils.exceptions import WaitingForTrials
  from orion.core.worker.trial import Trial
  from orion.executor.base import executor_factory
label_desc: Use image node_id 2 for calling the FakeClient obj's underlying member method code with example usage: obj.suggest(pool_size) and returns: self