code: def main(unused_argv):
      graphs = FLAGS.graphs.split(",")
      print(
          selective_registration_header_lib.get_header(
              graphs, FLAGS.proto_fileformat, FLAGS.default_ops
          )
      )
  
imports: import argparse
  import contextlib
  import sys
  from absl import app
label_desc: Use image node_id 1 for calling a global function with example usage: main(unused_argv) without return types