input: from typing import List
  
  def extract_top_trending_videos() -> List[str]:
      """ Implement a web scraper in Python to extract the top ten trending YouTube videos. This function will make a request to get the page content of YouTube's trending feed, parse the content using BeautifulSoup, and extract the titles of the top ten trending videos. The function will return a list of these video titles.
      
      Example:
      >>> extract_top_trending_videos()
      ['Video Title 1', 'Video Title 2', 'Video Title 3', ..., 'Video Title 10']
      """
output:     import requests
      from bs4 import BeautifulSoup
  
      url = "https://www.youtube.com/feed/trending"
      headers = {
          "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3"
      }
  
      response = requests.get(url, headers=headers)
      soup = BeautifulSoup(response.text, "html.parser")
  
      video_titles = []
      for title in soup.find_all("a", {"class": "yt-simple-endpoint style-scope ytd-video-renderer"}):
          video_titles.append(title.get_text())
          if len(video_titles) == 10:
              break
  
      return video_titles