code: def test_interface_conversion(get_circuit, output_dim):
      """Test if input QNodes with all types of interface are converted internally to the TensorFlow
      interface"""
      c, w = get_circuit
      layer = KerasLayer(c, w, output_dim)
      assert layer.qnode.interface == "tf"
  
imports: from collections import defaultdict
  import numpy
  import pytest
  import pennylane
label_desc: Use image node_id 5 for calling a global function with example usage: test_interface_conversion(get_circuit, output_dim) without return types