code: def _determine_fullscreen_resolution(self):
      if is_windows():
          return [
              win32api.GetSystemMetrics(0),
              win32api.GetSystemMetrics(1),
          ]
      else:
          monitors = mss.mss().monitors
          return monitors[0]["width"], monitors[0]["height"]
  
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 8 for calling the DashboardApp obj's underlying member method code with example usage: obj._determine_fullscreen_resolution() and returns: list, monitors,  monitors