code: def test_getstate(parameter):
      """Test for the __getstate__ method."""
      par, _ = parameter
      assert par.__getstate__() == (
          "a",
          10.0,
          True,
          None,
          -100.0,
          100.0,
          5.0,
          None,
          None,
          10,
          1,
      )
  
imports: from math import trunc
  import pickle
  import numpy
  from numpy.testing import assert_allclose
  import pytest
  import lmfit
label_desc: Use image node_id 16 for calling a global function with example usage: test_getstate(parameter) without return types