code: def test_allowed(self):
      mb = pm.Minibatch(
          pt.as_tensor(self.data).astype(int), batch_size=20
      )
      assert is_minibatch(mb)
  
imports: import io
  import itertools
  import re
  import cloudpickle
  import numpy
  import pytensor
  import pytensor.tensor
  import pytest
  from pytensor import shared
  from pytensor.tensor.variable import TensorVariable
  import pymc
  from pymc.data import is_minibatch
  from pymc.pytensorf import GeneratorOp, floatX
label_desc: Use image node_id 2 for calling the TestMinibatch obj's underlying member method code with example usage: obj.test_allowed() without return types