code: def qubit_rotation_circuit():
      return qml.expval(qml.PauliZ(0))
  
file_path: pennylane/tests/optimize/test_adaptive.py
imports: import copy
  import pytest
  import pennylane
  from pennylane import numpy
label_desc: Use image node_id 8 for calling a global function with example usage: qubit_rotation_circuit() and returns: qml