code: @Override
      public ExplodedImporter importDirectory(File file, Filter<ArchivePath> filter) {
          Validate.notNull(file, "File must be specified");
          Validate.notNull(filter, "Filter must be specified");
          if (!file.isDirectory()) {
              throw new IllegalArgumentException("Given file is not a directory " + file.getAbsolutePath());
          }
  
          doImport(file, file.listFiles(), filter);
          return this;
      }
docs: {@inheritDoc}
  
  @see org.jboss.shrinkwrap.api.importer.ExplodedImporter#importDirectory(java.io.File, org.jboss.shrinkwrap.api.Filter)