public function prependPath($path)
 {
     $this->path = AbstractZipHeader::pathJoin($path, $this->path);
     if (isset($this->extraFieldsArray[AbstractExtraField::HEADER_UNICODE_PATH])) {
         $ef = $this->extraFieldsArray[AbstractExtraField::HEADER_UNICODE_PATH];
         $ef->CRC32 = crc32($this->path);
         $ef->utf8Data = AbstractZipHeader::pathJoin($path, $ef->utf8Data);
     }
 }