code: def run(self):
      model = dummy_flow_model()
      model.test_flow_passes = []
      for flow in self.flows_to_apply:
          model.apply_flow(flow, self.reapply)
      self.observed_pass_order = model.test_flow_passes
      return self.observed_pass_order == self.expected_pass_order
  
imports: import pytest
  import hls4ml
label_desc: Use image node_id 2 for calling the FlowTester obj's underlying member method code with example usage: obj.run() and returns: unknown