Jelix\Installer\AbstractInstaller::firstExec PHP Method

    protected function firstExec($contextId)
    {
        if (in_array($contextId, $this->contextId)) {
            return false;
        }
        if (!in_array($contextId, $this->newContextId)) {
            $this->newContextId[] = $contextId;
        }
        return true;
    }