input: def extract_specific_data(url: str) -> List[str]:
      """ Create a web scraper that extracts specific data from a given website.
      The web scraper should utilize the Python package BeautifulSoup to parse webpages and extract the required data.
      For example, to extract the URL from a list of webpages, the following code snippet can be used:
      >>> extract_specific_data("https://example.com")
      ['https://example.com/url1', 'https://example.com/url2']
      """
output:     from bs4 import BeautifulSoup
      import requests
  
      response = requests.get(url)
      soup = BeautifulSoup(response.text, 'html.parser')
      
      specific_data = []
      for link in soup.find_all('a'):
          href = link.get('href')
          if href and url in href:
              specific_data.append(href)
      
      return specific_data