code: def get_x(self):
      return np.linspace(self.start, self.stop, self.npts)
  
file_path: lmfit-py/tests/test_custom_independentvar.py
imports: import numpy
  from lmfit.lineshapes import gaussian
  from lmfit.models import Model
label_desc: Use image node_id 2 for calling the Stepper obj's underlying member method code with example usage: obj.get_x() and returns: np