code: def main(unused_args):
      tune_parameters()
      return 0
  
file_path: pipelinedp/examples/restaurant_visits/run_without_frameworks_tuning.py
imports: from absl import app
  from absl import flags
  import pipeline_dp
  import pandas
  import analysis
  from analysis import parameter_tuning
  from pipeline_dp.dataset_histograms import computing_histograms
label_desc: Use image node_id 6 for calling a global function with example usage: main(unused_args) and returns: int