code: def test_splitlorentzian_prefix():
      """Regression test for SplitLorentzian model (see GH #566)."""
      mod1 = models.SplitLorentzianModel()
      par1 = mod1.make_params(
          amplitude=1.0, center=0.0, sigma=0.9, sigma_r=1.3
      )
      par1.update_constraints()
  
      mod2 = models.SplitLorentzianModel(prefix="prefix_")
      par2 = mod2.make_params(
          amplitude=1.0, center=0.0, sigma=0.9, sigma_r=1.3
      )
      par2.update_constraints()
  
file_path: lmfit-py/tests/test_builtin_models.py
imports: import inspect
  import numpy
  from numpy.testing import assert_allclose
  import pytest
  from scipy.optimize import fsolve
  from lmfit import lineshapes, models
  from lmfit.models import GaussianModel
label_desc: Use image node_id 5 for calling a global function with example usage: test_splitlorentzian_prefix() without return types