docs: function(
          mobilePhoneNumber,
          smsCode,
          attrs,
          options
        ) {
          attrs = attrs || {};
          attrs.mobilePhoneNumber = mobilePhoneNumber;
          attrs.smsCode = smsCode;
          var user = AV.Object._create('_User');
          return user.signUpOrlogInWithMobilePhone(attrs, options);
        }