Function authenticate

spec/ParseUser.spec.js:1346–1354

(options)

      synchronizedExpiration: null,

      authenticate(options) {
        if (this.shouldError) {
          options.error(this, 'An error occurred');
        } else if (this.shouldCancel) {
          options.error(this, null);
        } else {
          options.success(this, this.authData);
        }
      },
      restoreAuthentication(authData) {
        if (!authData) {
          this.synchronizedUserId = null;