code: def test_interface_conversion(get_circuit):
      """Test if input QNodes with all types of interface are converted internally to the PyTorch
      interface"""
      c, w = get_circuit
      layer = TorchLayer(c, w)
      assert layer.qnode.interface == "torch"
  
imports: from unittest import mock
  import math
  from collections import defaultdict
  import numpy
  import pytest
  import pennylane
  from pennylane.qnn.torch import TorchLayer
label_desc: Use image node_id 3 for calling a global function with example usage: test_interface_conversion(get_circuit) without return types