kahlan\Allow::toBeOK PHP Method

    public function toBeOK()
    {
        if (!is_string($this->_actual)) {
            throw new Exception("Error `toBeOK()` need to be applied on a fully-namespaced class or function name.");
        }
        if ($this->_isClass) {
            Monkey::patch($this->_actual, Double::classname());
        } else {
            Monkey::patch($this->_actual, function () {
            });
        }
    }