code: def get_a(self):
      return self._a
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import absltest
  from model_search import registry
label_desc: Use image node_id 2 for calling the ModifyTest obj's underlying member method code with example usage: obj.get_a() and returns: self