private function yieldAllConfig()
    {
        $this->allConfig = $this->allConfig ?: $this->getAllConfigNames();
        foreach ($this->allConfig as $name) {
            yield $name;
        }
    }
private function yieldAllConfig()
    {
        $this->allConfig = $this->allConfig ?: $this->getAllConfigNames();
        foreach ($this->allConfig as $name) {
            yield $name;
        }
    }
private function yieldAllConfig ( ) { $ this -> allConfig = $ this -> allConfig ? : $ this -> getAllConfigNames ( ) ; foreach ( $ this -> allConfig as $ name ) { yield $ name ; } }
Yield configuration names.

@return \Generator
Yield generator with config name.
Yield configuration names .