/**
  * @throws FileFormatNotParsable
  * @throws FileNotReadable
  *
  * @param string $pathToFile
  */
 private function addSettingsFromPath($pathToFile)
 {
     $arrayableFile = $this->arrayableFileFactory->getArrayableFileFromPath($pathToFile);
     $fileContentsAsArray = $arrayableFile->toArray();
     $config = new ConfigTree($fileContentsAsArray);
     $this->configTreeToReturn = $this->configTreeToReturn->withAnotherConfigTreeMergedIn($config);
 }