code: def _accept(prefix):
      return prefix[:2] == b"BM"
  
file_path: catboost/contrib/python/Pillow/py2/PIL/BmpImagePlugin.py
imports: from .None import Image, ImageFile, ImagePalette
  from ._binary import i8, i16le, i32le, o8, o16le, o32le
label_desc: Use image node_id 1 for calling a global function with example usage: _accept(prefix) and returns: unknown