code: def _merge_frames_and_input_events(self, input_events):
      has_game_frame_buffer = False
  
      game_frame_buffer_index = 0
      input_event_index = 0
  
      merged = list()
  
      while True:
          game_frame_buffer = None
          input_event = None
  
          if game_frame_buffer_index > (
              len(self.game_frame_buffers) - 1
          ) and input_event_index > (len(input_events) - 1):
              break
          else:
              if game_frame_buffer_index <= (
                  len(self.game_frame_buffers) - 1
              ):
                  game_frame_buffer = self.game_frame_buffers[
                      game_frame_buffer_index
                  ]
  
              if input_event_index <= (len(input_events) - 1):
                  input_event = input_events[input_event_index]
  
          if game_frame_buffer is None:
              item = input_event
              input_event_index += 1
          elif input_event is None:
              item = game_frame_buffer
              game_frame_buffer_index += 1
          else:
              game_frame_buffer_timestamp = game_frame_buffer.frames[
                  -2
              ].timestamp
              input_event_timestamp = input_event["timestamp"]
  
              if game_frame_buffer_timestamp < input_event_timestamp:
                  item = game_frame_buffer
                  game_frame_buffer_index += 1
              else:
                  item = input_event
                  input_event_index += 1
  
          if isinstance(item, GameFrameBuffer):
              merged.append(item)
              has_game_frame_buffer = True
          else:
              if has_game_frame_buffer:
                  merged.append(item)
  
      self.rewards = self.rewards[1:]
  
      return merged[1:]
  
imports: from serpent.machine_learning.reinforcement_learning.agent import Agent
  from serpent.game_frame_buffer import GameFrameBuffer
  from serpent.input_recorder import InputRecorder
  from serpent.utilities import SerpentError, clear_terminal
  from serpent.enums import InputControlTypes
  from serpent.logger import Loggers
  from serpent.config import config
  import random
  import time
  import pickle
  import signal
  import atexit
  import subprocess
  import shlex
  import h5py
  from redis import StrictRedis
label_desc: Use image node_id 4 for calling the RecorderAgent obj's underlying member method code with example usage: obj._merge_frames_and_input_events(input_events) and returns: merged