code: def hist(self, *args, **kwargs):
      pass
  
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 2 for calling the MockMPLAxis obj's underlying member method code with example usage: obj.hist() without return types