docstr: Call the appropriate chunk handler
docstr_tok: ["Call","the","appropriate","chunk","handler"]
code: def call(self, cid, pos, length):
      """Call the appropriate chunk handler"""
  
      logger.debug("STREAM %r %s %s", cid, pos, length)
      return getattr(self, "chunk_" + cid.decode("ascii"))(pos, length)
  
imports: import logging
  import re
  import struct
  import zlib
  from .None import Image, ImageFile, ImagePalette
  from ._binary import i8, i16be, i32be, o16be, o32be
  from ._util import py3
label_desc: Use image node_id 7 for calling the ChunkStream obj's underlying member method code with example usage: obj.call(cid, pos, length) and returns: getattr