code: def _safe_read(self, length):
      return ImageFile._safe_read(self.fd, length)
  
imports: import os
  import struct
  from enum import IntEnum
  from io import BytesIO
  from .None import Image, ImageFile
label_desc: Use image node_id 3 for calling the _BLPBaseDecoder obj's underlying member method code with example usage: obj._safe_read(length) and returns: ImageFile