code: def __getattr__(self, attr):
      return getattr(self.mpl, attr)
  
file_path: pyqtgraph/pyqtgraph/exporters/Matplotlib.py
imports: from ..None import PlotItem
  from ..None import functions
  from ..Qt import QtCore, QtWidgets
  from .Exporter import Exporter
label_desc: Use image node_id 2 for calling the MatplotlibWindow obj's underlying member method code with example usage: obj.__getattr__(attr) and returns: getattr