titanscssc::setExisting PHP Method

    protected function setExisting($name, $value, $env = null)
    {
        if (is_null($env)) {
            $env = $this->getStoreEnv();
        }
        if (isset($env->store[$name]) || is_null($env->parent)) {
            $env->store[$name] = $value;
        } else {
            $this->setExisting($name, $value, $env->parent);
        }
    }