class_docstr: Interface for performing each step of a training algorithm.
code: def distribution(self):
      return self._distribution
  
file_path: tensorflow/tensorflow/python/distribute/step_fn.py
imports: from tensorflow.python.eager import backprop
  from tensorflow.python.training import optimizer
label_desc: Use image node_id 2 for calling the Step obj's underlying member method code with example usage: obj.distribution() and returns: self