code: def __init__(self, item):
      Exporter.__init__(self, item)
  
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 1 to create a new MatplotlibExporter object from inherited base classes: Exporter with example: obj = MatplotlibExporter(item)