class_docstr: A dictionary-like object that records indices of items actually accessed
  from a list.
class_docstr_tok: ["A","dictionary-like","object","that","records","indices","of","items","actually","accessed","from","a","list","."]
code: def __getitem__(self, v):
      self.s.add(self.d[id(v)])
      return v
  
imports: from fontTools.misc.timeTools import timestampNow
  from fontTools.ttLib.tables.DefaultTable import DefaultTable
  from functools import reduce
  import operator
  import logging
label_desc: Use image node_id 2 for calling the AttendanceRecordingIdentityDict obj's underlying member method code with example usage: obj.__getitem__(v) and returns: v