input: Write a function to modify the given Python program to properly include authorization headers and parse the API response correctly.
  assert modifying_api_request("https://api.example.com/users", "Bearer YOUR_API_TOKEN") == [print(user) for user in response['data']]
  assert modifying_api_request("", "") == None
  assert modifying_api_request("https://api.example.com/users", "") == None
output: import requests
  
  def modifying_api_request(url, token):
      if not url or not token:
          return None
      headers = {'Authorization': f'Bearer {token}'}
      response = requests.get(url, headers=headers)
      if response.status_code == 200:
          data = response.json()
          return [print(user) for user in data['data']]
      return None