code: def download_youtube_video_transcript(video_link: str):
      """Downloads a YouTube video's transcript.
  
      Args:
          video_link (str): url of the target YouTube video.
      """
      video_id = extract.video_id(video_link)
      print("⏳ Transcript download in progress...")
      transcript = YouTubeTranscriptApi.get_transcript(video_id)
      print("✅ Video transcript downloaded successfully.")
      return transcript
  
imports: import os
  import shutil
  from typing import Dict, List
  import pandas
  import evadb
  from pytube import YouTube, extract
  from youtube_transcript_api import YouTubeTranscriptApi
label_desc: Use image node_id 6 for calling a global function with example usage: download_youtube_video_transcript(video_link) and returns: transcript