code: @Override
      public ExplodedImporter importDirectory(String fileName, Filter<ArchivePath> filter) {
          Validate.notNull(fileName, "FileName must be specified");
          return importDirectory(new File(fileName), filter);
      }
docs: {@inheritDoc}
  
  @see org.jboss.shrinkwrap.api.importer.ExplodedImporter#importDirectory(java.lang.String, org.jboss.shrinkwrap.api.Filter)