Returns the value for the given key for this settings instance.
        
        :return     <variant>

def value(self, key, default=None):
        """
        Returns the value for the given key for this settings instance.
        
        :return     <variant>
        """
        if self._customFormat:
            return self._customFormat.value(key, default)
        else:
            return unwrapVariant(super(XSettings, self).value(key))