class_docstr: Converts integer node ID's to human readable labels.
code: def id_to_string(self, node_id):
      if node_id not in self.node_lookup:
          return ""
      return self.node_lookup[node_id]
  
file_path: AdvBox/tools.py
imports: from __future__ import division
  from __future__ import print_function
  from builtins import object
  from past.utils import old_div
  import numpy
  import matplotlib.pyplot
  import tensorflow
  import re
label_desc: Use image node_id 3 for calling the NodeLookup obj's underlying member method code with example usage: obj.id_to_string(node_id) and returns: self, str