class_docstr: Abstract base iterator class
code: def _convert_data(self, labels, features):
      pass
  
file_path: recommenders/recommenders/models/deeprec/io/iterator.py
imports: import numpy
  import tensorflow
  import abc
label_desc: Use image node_id 3 for calling the BaseIterator obj's underlying member method code with example usage: obj._convert_data(labels, features) without return types