code: function() {
        var oauth_accessToken = StackMob.Storage.retrieve('oauth2.accessToken');
        var oauth_macKey = StackMob.Storage.retrieve('oauth2.macKey');
        var oauth_expires = StackMob.Storage.retrieve('oauth2.expires');
        var oauth_refreshToken = StackMob.Storage.retrieve(StackMob.REFRESH_TOKEN_KEY);
        var userSchemaInfo = StackMob.Storage.retrieve('oauth2.userSchemaInfo');
        var oauth_schema = null;
  
        try {
          oauth_schema = JSON.parse(userSchemaInfo);
        } catch (e) { /* Harmless if this fails (in theory!)*/ }
  
        if (_.every([oauth_accessToken, oauth_macKey, oauth_expires, oauth_refreshToken, oauth_schema])) {
          var creds = {
            'oauth2.accessToken' : oauth_accessToken,
            'oauth2.macKey' : oauth_macKey,
            'oauth2.expires' : oauth_expires,
            'oauth2.userSchemaInfo' : oauth_schema
          };
          creds[StackMob.REFRESH_TOKEN_KEY] = oauth_refreshToken;
  
          return creds;
        } else {
          return {};
        }
  
      }
docs: Retrieve the OAuth 2.0 credentials from client storage.