code: function(token) {
          this.oauthClient.setCredentials(token);
          this.brain.set(this.TOKEN_KEY, token.access_token);
          if (token.refresh_token) {
              this.brain.set(this.REFRESH_KEY, token.refresh_token);
          }
          this.brain.set(this.EXPIRY_KEY, +token.expiry_date);
          this.brain.save();
          this.brain.resetSaveInterval(60);
      }
docs: Stores the token and expire time into the robot brain and
  Sets it in the oauthClient
  
  @param  token  the token object returned from google oauth2