class_docstr: Test properties
docstr: Test stored coefficients list
docstr_tok: ["Test","stored","coefficients","list"]
code: def test_coeffs(self):
      """Test stored coefficients list"""
      coeffs = test_example.coeffs
      assert [1, 2, f1, f2] == coeffs
  
imports: import pytest
  import pennylane
  from pennylane import numpy
  from pennylane.pulse import ParametrizedHamiltonian
  from pennylane.wires import Wires
label_desc: Use image node_id 2 for calling the TestProperties obj's underlying member method code with example usage: obj.test_coeffs() without return types