code: def test_multiple_input_types_only(self):
      class InputTypes(Typing):
          @property
          def input_types(self):
              return {
                  "x": NeuralType(("B",), ElementType()),
                  "y": NeuralType(("B",), ElementType()),
              }
  
          @typecheck()
          def __call__(self, x, y):
              x += y
              return x
  
      obj = InputTypes()
      result = obj(x=torch.zeros(10), y=torch.ones(10))
  
      assert result.sum() == torch.tensor(10.0)
      assert hasattr(result, "neural_type") is False
  
imports: from typing import List, NamedTuple
  import pytest
  import torch
  from nemo.core import Typing, typecheck
  from nemo.core.neural_types import *
label_desc: Use image node_id 4 for calling the TestNeuralTypeCheckSystem obj's underlying member method code with example usage: obj.test_multiple_input_types_only() and returns: dict, x