code: private function _hardCopy(string $originDir, string $targetDir): string
      {
          $this->filesystem->mkdir($targetDir, 0777);
          // We use a custom iterator to ignore VCS files
          $this->filesystem->mirror($originDir, $targetDir, Finder::create()->ignoreDotFiles(false)->in($originDir));
  
          return AssetsInstallCommand::METHOD_COPY;
      }
docs: Copies origin to target.
  
  @param string $originDir
  @param string $targetDir
  
  @return string