mainConfigFile = $mainConfigFile; $this->setConfigFiles = $setConfigFiles; } public function getMainConfigFile() : ?string { return $this->mainConfigFile; } /** * @return string[] */ public function getConfigFiles() : array { $configFiles = []; if ($this->mainConfigFile !== null) { $configFiles[] = $this->mainConfigFile; } return \array_merge($configFiles, $this->setConfigFiles); } }