class_docstr: Widget implementing a :class:`~pyqtgraph.GraphicsView` with a single
  :class:`~pyqtgraph.MultiPlotItem` inside.
code: def resizeEvent(self, ev):
      if self.closed:
          return
      if self.autoPixelRange:
          self.range = QtCore.QRectF(
              0, 0, self.size().width(), self.size().height()
          )
      MultiPlotWidget.setRange(
          self, self.range, padding=0, disableAutoPixel=False
      )  ## we do this because some subclasses like to redefine setRange in an incompatible way.
      self.updateMatrix()
  
file_path: pyqtgraph/pyqtgraph/widgets/MultiPlotWidget.py
imports: from ..graphicsItems import MultiPlotItem
  from ..Qt import QtCore
  from .GraphicsView import GraphicsView
label_desc: Use image node_id 9 for calling the MultiPlotWidget obj's underlying member method code with example usage: obj.resizeEvent(ev) without return types