input: Write a function to create a webscraper using Python's Selenium that retrieves data from an online store. The function should initialize a Firefox session, navigate to a specified URL, perform a search, and print the names of the products found. If no products are found, it should print an appropriate message.
  
  def scrape_products(url, search_term):
      from selenium import webdriver
      driver = webdriver.Firefox()
      driver.implicitly_wait(30)
      driver.maximize_window()
      driver.get(url)
      search_field = driver.find_element_by_name("q")
      search_field.clear()
      search_field.send_keys(search_term)
      search_field.submit()
      product_list = driver.find_elements_by_class_name("product")
      if not product_list:
          print("No products found.")
      else:
          for product in product_list:
              print(product.text)
      driver.quit()
  
  assert scrape_products("https://www.example.com/", "shoes") == None
  assert scrape_products("https://www.example.com/", "notexist") == None
  
  Both tests should print the names of the products found or "No products found." if no products are found.
output: def scrape_products(url, search_term):
      from selenium import webdriver
      driver = webdriver.Firefox()
      driver.implicitly_wait(30)
      driver.maximize_window()
      driver.get(url)
      search_field = driver.find_element_by_name("q")
      search_field.clear()
      search_field.send_keys(search_term)
      search_field.submit()
      product_list = driver.find_elements_by_class_name("product")
      if not product_list:
          print("No products found.")
      else:
          for product in product_list:
              print(product.text)
      driver.quit()