class_docstr: Widget implementing a :class:`~pyqtgraph.GraphicsView` with a single
  :class:`~pyqtgraph.MultiPlotItem` inside.
code: def close(self):
      self.mPlotItem.close()
      self.mPlotItem = None
      self.setParent(None)
      GraphicsView.close(self)
  
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 7 for calling the MultiPlotWidget obj's underlying member method code with example usage: obj.close() without return types