code: protected function createContributorDir($sourceDir, array $options, $username)
      {
          if (null === $username) {
              return;
          }
  
          $this->init($sourceDir, $options, $username);
          if (is_dir($this->contributorDir)) {
              return;
          }
  
          $this->filesystem->copy($this->productionDir . '/slot.json', $this->contributorDir . '/slot.json', true);
          $this->filesystem->mirror($this->productionDir . '/blocks', $this->contributorDir . '/blocks');
      }
docs: Creates the contributor folder
  
  @param string $sourceDir
  @param array $options
  @param string $username