code: def initialize_background_image(self, width, height):
      background_image = Image(source="dashboard/serpent.png")
  
      background_image.size = (height, height)
      background_image.opacity = 0.1
      background_image.pos = (
          (width / 2) - (height / 2),
          self.size[1] - height,
      )
  
      self.add_widget(background_image)
  
imports: from serpent.utilities import SerpentError, is_windows, wait_for_crossbar
  from serpent.config import config
  import time
  import subprocess
  import shlex
  import signal
  import atexit
label_desc: Use image node_id 2 for calling the DashboardRootWidget obj's underlying member method code with example usage: obj.initialize_background_image(width, height) without return types