code: def main(use_start_run):
      if use_start_run:
          with mlflow.start_run():
              call_tracking_apis()
      else:
          call_tracking_apis()
  
imports: import sys
  import tempfile
  import mlflow
label_desc: Use image node_id 2 for calling a global function with example usage: main(use_start_run) without return types