code: def test_unroll_batch(self):
      # Test mini-batch unrolling for various legal values.
  
      # mini-batch of size 6 is multiple of 2 and 3. Should work.
      self.validate(
          (6, 2, 3, 3),
          (3, 2, 2, 2),
          "valid",
          unroll_batch=2,
          verify_grad=False,
      )
      self.validate(
          (6, 2, 3, 3),
          (3, 2, 2, 2),
          "valid",
          unroll_batch=3,
          verify_grad=False,
      )
  
imports: from __future__ import absolute_import, print_function, division
  import time
  from nose.plugins.skip import SkipTest
  import numpy
  import theano
  import theano.tensor
  from theano.tests import unittest_tools
  from theano.tensor.nnet import conv
  from theano.tensor.basic import _allclose, NotScalarConstantError
  from theano.tests.unittest_tools import attr
label_desc: Use image node_id 12 for calling the TestConv2D obj's underlying member method code with example usage: obj.test_unroll_batch() without return types