/**
  * @param FileFilter $previousFilter
  * @param $destFile
  * @param YuiCompressorPath $yuiCommpressorPath
  * @param int $filterUpdateMode
  */
 public function __construct(FileFilter $previousFilter, $destFile, YuiCompressorPath $yuiCommpressorPath, $filterUpdateMode = FileFilter::CHECK_EXISTS_MTIME_AND_PREVIOUS)
 {
     $this->yuiCommpressorPath = $yuiCommpressorPath;
     $this->previousFilter = $previousFilter;
     $this->srcFile = $previousFilter->getFile();
     $this->destFile = clone $destFile;
     //$this->modifyFilename($this->srcFile);
     $this->filterUpdateMode = $filterUpdateMode;
 }