code: def _test_real_plot(self, plot_obj, plot_params_list):
      for plot_params in plot_params_list:
          fig, axes, _ = plot_obj.plot(**plot_params)
          self.close_plt(plot_params)
          assert fig is not None
          if plot_params.get("engine", "plotly") == "matplotlib":
              assert axes is not None
          else:
              assert axes is None
  
imports: import pytest
  import numpy
  from pdpbox.info_plots import TargetPlot, PredictPlot, InteractTargetPlot, InteractPredictPlot
  from pdpbox.utils import FeatureInfo, _make_list
  from conftest import DummyModel, PlotTestBase
label_desc: Use image node_id 3 for calling the _TestInfoPlot obj's underlying member method code with example usage: obj._test_real_plot(plot_obj, plot_params_list) without return types