code: def register_vcs_handler(vcs, method):  # decorator
      """Create decorator to mark a method as the handler of a VCS."""
  
      def decorate(f):
          """Store f in HANDLERS[vcs][method]."""
          if vcs not in HANDLERS:
              HANDLERS[vcs] = {}
          HANDLERS[vcs][method] = f
          return f
  
      return decorate
  
imports: import configparser
  import errno
  import json
  import os
  import re
  import subprocess
  import sys
label_desc: Use image node_id 3 for calling a global function with example usage: register_vcs_handler(vcs, method) and returns: decorate, f