class_docstr: A multi-choice setting that gets its choices through providers
  
  This setting operates similarly to the name subscribers. It gets
  its choices from the name providers for the subscriber's group.
  It displays a list of choices and the user can select multiple
  choices.
code: def test_valid(self, pipeline):
      self.load_choices(pipeline)
      super(SubscriberMultiChoice, self).test_valid(pipeline)
  
file_path: CellProfiler/src/subpackages/core/cellprofiler_core/setting/multichoice/_subscriber_multichoice.py
imports: from ._multichoice import MultiChoice
  from ...constants.setting import get_name_provider_choices
label_desc: Use image node_id 5 for calling the SubscriberMultiChoice obj's underlying member method code with example usage: obj.test_valid(pipeline) without return types