code: def previous_game_frame(self):
      return self.frames[0] if len(self.frames) else None
  
file_path: SerpentAI/serpent/game_frame_buffer.py
imports: from serpent.visual_debugger.visual_debugger import VisualDebugger
  import numpy
label_desc: Use image node_id 3 for calling the GameFrameBuffer obj's underlying member method code with example usage: obj.previous_game_frame() and returns: unknown