code: def parameters(self):
      return None
  
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 MatplotlibExporter obj's underlying member method code with example usage: obj.parameters() and returns: None