Destiny\Model::getProperty PHP Method

    protected function getProperty($key)
    {
        if (isset($this->cached[$key])) {
            return $this->cached[$key];
        }
        $value = isset($this->properties[$key]) ? $this->properties[$key] : null;
        $mutator = 'g' . $key;
        if (is_callable([$this, $mutator])) {
            $this->cached[$key] = $value = $this->{$mutator}($value);
        }
        return $value;
    }