new_contents: INF_APP_ID = 'xxxxxxxx'
  INF_APP_KEY = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
  CLIENT_ACCESS_TOKEN = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
  FIREBASE_API_KEY = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
  FIREBASE_AUTH_DOMAIN = ''
  FIREBASE_DB_URL = 'https://your-firebase-url.firebaseio.com/'
  FIREBASE_STORAGE_BUCKET = ''
  
subject: Create secrets.example.py