code: def parse_arguments():
      
      parser = create_parser()
      args = parser.parse_args()
      if not args.role_requirements_old_commit:
          args.role_requirements_old_commit = args.role_requirements
      if not args.rpc_product_old_commit:
          args.rpc_product_old_commit = args.rpc_product
      return args
docs: Parse arguments.