code: def is_window_focused(self, window_id):
      focused_window_id = (
          subprocess.check_output(shlex.split("xdotool getwindowfocus"))
          .decode("utf-8")
          .strip()
      )
      return focused_window_id == window_id
  
file_path: SerpentAI/serpent/window_controllers/linux_window_controller.py
imports: from serpent.window_controller import WindowController
  import subprocess
  import shlex
  import re
label_desc: Use image node_id 7 for calling the LinuxWindowController obj's underlying member method code with example usage: obj.is_window_focused(window_id) and returns: unknown