code: def draw_rubberband(self, event, x0, y0, x1, y1):
      height = self.canvas.figure.bbox.height
      y1 = height - y1
      y0 = height - y0
      rect = [int(val) for val in (x0, y0, x1 - x0, y1 - y0)]
      self.canvas._draw_rubberband(rect)
  
imports: import logging
  import sys
  import matplotlib
  from matplotlib import _api, backend_tools, cbook
  from matplotlib._pylab_helpers import Gcf
  from matplotlib.backend_bases import _Backend, FigureCanvasBase, FigureManagerBase, NavigationToolbar2, TimerBase
  from matplotlib.backend_tools import Cursors
  import gi
  from gi.repository import Gdk, Gio, GLib, Gtk
label_desc: Use image node_id 2 for calling the _NavigationToolbar2GTK obj's underlying member method code with example usage: obj.draw_rubberband(event, x0, y0, x1, y1) without return types