code: def main(_):
      displayer = metadata.MetadataDisplayer.with_model_file(
          FLAGS.model_path
      )
      with open(FLAGS.export_json_path, "w") as f:
          f.write(displayer.get_metadata_json())
  
imports: from absl import app
  from absl import flags
  from mediapipe.tasks.python.metadata import metadata
label_desc: Use image node_id 1 for calling a global function with example usage: main(_) without return types