code: def defer_indexed(f):
      return property(
          fget=notify(lambda self, i: f(self, i.indices, i.values))
      )
  
imports: import collections
  import functools
  import itertools
  import threading
  import contextlib
  from sonnet.src.functional import utils
  import tensorflow
label_desc: Use image node_id 6 for calling a global function with example usage: defer_indexed(f) and returns: property