code: def test_get_depth(self):
      # test case for get_depth utilitary function
  
      myType = TypedListType(
          TensorType(pytensor.config.floatX, shape=(None, None))
      )
  
      myManualNestedType = TypedListType(
          TypedListType(TypedListType(myType))
      )
  
      assert myManualNestedType.get_depth() == 3
  
imports: import numpy
  import pytest
  import pytensor
  from pytensor.tensor.type import TensorType
  from pytensor.typed_list.basic import TypedListVariable
  from pytensor.typed_list.type import TypedListType
  from tests.tensor.utils import random_ranged
label_desc: Use image node_id 11 for calling the TestTypedListType obj's underlying member method code with example usage: obj.test_get_depth() without return types