input: Write a function to query Twitter and get the most recent tweets from a given username. The function should authenticate using the provided API keys and print the text of each retrieved tweet. If the username is not provided, the function should return an empty list.
  
  def get_recent_tweets(username, consumer_key, consumer_secret, access_token, access_token_secret):
      if not username:
          return []
      import tweepy
      auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
      auth.set_access_token(access_token, access_token_secret)
      api = tweepy.API(auth)
      tweets = api.user_timeline(screen_name=username)
      return [tweet.text for tweet in tweets]
  
  assert get_recent_tweets("@elonmusk", "CONSUMER_KEY", "CONSUMER_SECRET", "ACCESS_TOKEN", "ACCESS_TOKEN_SECRET") == ['Tweet 1', 'Tweet 2', 'Tweet 3']
  assert get_recent_tweets("", "CONSUMER_KEY", "CONSUMER_SECRET", "ACCESS_TOKEN", "ACCESS_TOKEN_SECRET") == []
output: def get_recent_tweets(username, consumer_key, consumer_secret, access_token, access_token_secret):
      if not username:
          return []
      import tweepy
      auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
      auth.set_access_token(access_token, access_token_secret)
      api = tweepy.API(auth)
      tweets = api.user_timeline(screen_name=username)
      return [tweet.text for tweet in tweets]