code: def finalize_plot():
      plt.savefig(args.save_plot_file)
      if args.plot_interactive:
          plt.show()
      plt.close()
  
file_path: bluefog/examples/pytorch_optimization.py
imports: import os
  import torch
  import matplotlib
  import matplotlib.pyplot
  import argparse
  import bluefog.torch
  from bluefog.common import topology_util
  import networkx
label_desc: Use image node_id 1 for calling a global function with example usage: finalize_plot() without return types