class_docstr: jupyter_rfb analogue of
  :class:`GraphicsLayoutWidget <pyqtgraph.GraphicsLayoutWidget>`.
code: def addPlot(self, *args, **kwds):
      kwds["enableMenu"] = False
      plotItem = self.gfxLayout.addPlot(*args, **kwds)
      connect_viewbox_redraw(plotItem.getViewBox(), self.request_draw)
      return plotItem
  
imports: import jupyter_rfb
  import numpy
  from ..None import functions
  from ..None import graphicsItems, widgets
  from ..Qt import QtCore, QtGui
label_desc: Use image node_id 2 for calling the GraphicsLayoutWidget obj's underlying member method code with example usage: obj.addPlot() and returns: plotItem