title: Firebase Authentification expiresIn (time needed for token to expire )
body: <p>In the response of (<code>createUserWithEmailAndPassword</code> or <code>signInWithEmailAndPassword</code>)
  we have <code>_tokenResponse.expiresIn</code> and it's equal to 3600 seconds</p>
  <p>How to modify this value to a longer value like  30 days or something like that?</p>