code: def plot_matplotlib(self):
      raise NotImplementedError(
          "Subclasses must implement plot_matplotlib method."
      )
  
imports: from .styles import _prepare_plot_style, _axes_modify, _display_percentile, _modify_legend_axes, _get_axes_label
  import numpy
  from itertools import cycle
  import plotly.express
  import matplotlib
  import matplotlib.pyplot
  from matplotlib.gridspec import GridSpecFromSubplotSpec
  from mpl_toolkits.axes_grid1.inset_locator import inset_axes
  import matplotlib.patheffects
  import plotly.graph_objects
label_desc: Use image node_id 4 for calling the BaseInfoPlotEngine obj's underlying member method code with example usage: obj.plot_matplotlib() without return types