code: def test_standarad_checks():
      """Run standard checks with the assert_valid function."""
      op = qml.FlipSign([0, 1], wires=("a", "b"))
      qml.ops.functions.assert_valid(op)
  
file_path: pennylane/tests/templates/test_subroutines/test_flip_sign.py
imports: import pytest
  from pennylane import numpy
  import pennylane
label_desc: Use image node_id 1 for calling a global function with example usage: test_standarad_checks() without return types