code: def rule(rulefunc):
      _rules.append(rulefunc)
      return rulefunc
  
file_path: catboost/contrib/tools/python3/src/Lib/email/mime/audio.py
imports: from io import BytesIO
  from email import encoders
  from email.mime.nonmultipart import MIMENonMultipart
label_desc: Use image node_id 2 for calling a global function with example usage: rule(rulefunc) and returns: rulefunc