code: def set_xlim(self, *args):
      if len(args) == 2:
          mn, mx = args
      else:  # len(args) == 1
          mn, mx = args[0]
  
      self.mn = mn
      self.mx = mx
  
file_path: pmdarima/pmdarima/arima/tests/test_arima_diagnostics.py
imports: from pmdarima.datasets import load_lynx
  from pmdarima.arima import ARIMA
  from unittest.mock import patch
  import pytest
label_desc: Use image node_id 7 for calling the MockMPLAxis obj's underlying member method code with example usage: obj.set_xlim() without return types