code: def qubit_device(n_subsystems):
      return qml.device("default.qubit.legacy", wires=n_subsystems)
  
imports: import os
  import pathlib
  import numpy
  import pytest
  import pennylane
  from pennylane.devices import DefaultGaussian
label_desc: Use image node_id 6 for calling a global function with example usage: qubit_device(n_subsystems) and returns: qml