code: def test_rgb(h, f):
      """SGI image library"""
      if h.startswith(b"\001\332"):
          return "rgb"
  
file_path: catboost/contrib/tools/python3/src/Lib/imghdr.py
imports: from os import PathLike
  import warnings
label_desc: Use image node_id 6 for calling a global function with example usage: test_rgb(h, f) and returns: str